Even if they are on sale, these air-condition...

Even if they are on sale, these air-conditioners are equal in price to , if not more expensive than , ______ , at the other store.

A. anyone             B. the others        C. that        D. the ones

高三英语单项填空中等难度题查看答案及解析

. -What about the price of these washing machines?

-They are equal in price to, if not cheaper than, ____ at other shops in the street.

A. others　         B. it

C. that　         D. the ones

高三英语单项填空中等难度题查看答案及解析

--- What about the price of these washing machines?

--- They are equal in price to, if not cheaper than, ____ at the other shops in the street.

A. others                     B.      it                                   C.      that                     D.    the ones

高三英语单项填空中等难度题查看答案及解析

(2013·陕西西北工大附中模拟)—What about the price of these washing machines?

—They are equal in price to, if not cheaper than，________ at the other shops in the street.

A．others　 　　　　　　　　　　　　　　　　　　 B． it

C．    that　                             　　 D． those

高三英语单项填空中等难度题查看答案及解析

—What do you think of the price of these computers?

—They are at least equal in price to, if not cheaper than, ________ in other companies.

A. it                 B. ones               C. that                D. the ones

高三英语单项填空中等难度题查看答案及解析

--What do you think of the price of these computers?

--They are at least equal in price to, if not cheaper than, ____at the other companies.

A. it          B. ones         C．that           D．the ones

高三英语单项填空中等难度题查看答案及解析

— What do you think of the price of these computers?

— They are at least equal in price to, if not cheaper than, ____at the other companies.

高三英语单项填空简单题查看答案及解析

阅读理解。

Even if trees cannot walk, they are still on the move.

In parts of the Arctic, entire forests are moving northward. Across the Arctic, temperatures are rising faster than anywhere else in the world. As that happens, the tree line that marks where forests stop and the treeless tundra (冻原) starts has been shifting northward. Trees growing along the tree line must protect themselves from the cold wind. To do this,_plants tend to grow horizontal (水平的) branches low to the ground. The energy it takes for trees to grow this way means they don't have enough energy to make seeds.

But as Earth's climate has been warming, trees no longer have to just grow horizontally. Many can instead grow up toward the sky. This takes less energy. And with all that leftover energy, these trees have started producing more seeds. This happens especially in places where white spruce (白云杉) grows.

White spruce, which is a North American tree, is quite able to produce a lot of seeds, which can move long distances in the wind. When wind­blown seeds end up on the tundra beyond the tree line, they eventually can sprout(发芽) new trees. This explains how a forest can move. Of course, the process would work only if the tundra were warm enough. But in recent years, the whole planet has been warming.

New trees will provide shelters for some snow. Keeping the sun's rays from making the white surface disappear. Instead, the trees absorb the sun's heat. This warms the surrounding air. The extra warmth encourages even more trees to produce seeds. That further boosts a forest's ability to expand. In addition, more trees will trap more snow, preventing much of it from being blown away. Snow can trap heat in the soil below, which encourages trees to grow. The recent rise of temperatures has helped more trees grow past the tree line. People worry about impacts on the animals that depend on frozen conditions for food and shelter.

1.What is the main cause of the trees in the Arctic moving northward?

A．The shrinking of northern tundra.

B．The rising temperature.

C．The fierce and cold wind.

D．The abundant resources in the north.

2.What does the underlined word “this” in Paragraph 2 mean?

A．To produce more seeds.

B．To move northward.

C．To respond to the climate change.

D．To protect themselves from the cold wind.

3.What can be inferred from the last paragraph?

A．New trees can trap the snow, which may make the soil colder.

B．The trapped snow prevents new trees from producing more seeds.

C．New trees can make the surrounding air warmer.

D．New trees can bring more food and shelter to local animals.

4.The passage is most probably taken from ________.

A．a science report　 　　　　　　 B．a health report

C．a fashion magazine 　　　　 　 D．a children's magazine

高三英语阅读理解中等难度题查看答案及解析

These clothes of the latest style are on sale this weekend, with another 10% discount for ______ customers, for example, members of our shop.

高三英语单项填空简单题查看答案及解析

Humans make mistakes. Even surgeons with years of experience are not infallible. But what if these doctors could pool their knowledge and experience together and create a surgical standard of care, to be carried out by machines?

That's the idea behind surgical robots, which may soon perform most surgeries, from sewing up tiny wounds to performing heart procedures. Many of these operations are, in fact, already completed with the assistance of robots. But a recent test suggests that robots in the operating room may soon go a step further, performing on soft tissue completely on their own, from start to finish.

The Smart Tissue Autonomous Robot（STAR）, successfully completed surgeries on pigs. "We're the first group to develop autonomous robotic surgery with soft-tissue surgery, and when compared to standard operation, it's better, "says Peter Kim, professor of surgery. "The idea is not to replace surgeons；it will make the surgeons better and make the procedures safer. "

A recent Mayo Clinic study found that major surgical errors-including operating on the wrong site or side of the body, or even leaving tools or objects inside the patient-occur every one out of 22, 000 procedures. That's rare, but robots like STAR would aim to lower the number even further.

In the da Vinci surgical system, surgeons place their arms inside instruments and use their hands to control the movement of robotic tools on the operating table from afar. The robot's every major move is controlled by surgeons, and thus its results may vary based on the surgeon's training or experience.

STAR, on the other hand, is entirely autonomous. It's not only able to work on its own and perform surgeries with a more flexible "hand", but it's able to react to the unexpected incidents. Cutting into hard tissue like bones is one thing, but operating on moving soft tissue is far more complex. STAR reacts to a changing environment, similar to how self-driving cars are programmed to not only drive on the highway, but also react to another driver making a mistake and getting in your way.

1.The underlined word "infallible" in Paragraph 1probably means ______ .

A. quite smart　　 B. really creative

C. rather responsible　　 D. always right

2.We can learn from the passage that STAR ______ .

A. can perform the operation on its own

B. has been widely used in the operating room

C. can make surgeries much faster

D. will take the place of surgeons

3.In the da Vinci surgical system,　 ______ .

A. robots are trained from afar　　 B. robots always make mistakes

C. surgery results depend on surgeons　　 D. surgeons have trouble controlling robots

4.In the last paragraph, the author mentions self-driving cars in order to show ______ .

A. how smart an autonomous robot can be

B. how difficult self-driving on the highway is

C. how bad getting in another driver's way might be

D. how dangerous operating on people is.

高三英语阅读理解中等难度题查看答案及解析