54. Extensive tests have been ________ on the...

54. Extensive tests have been ________ on the patient.

高三英语单项填空简单题查看答案及解析

Four out of the 48 self-driving cars on public roads in California have been involved in accidents in the last eight months, according to the state's Department of Motor Vehicles.

The agency began issuing permits for the testing of self-driving vehicles in September 2014.

Three of the four cars belonged to Google, the fourth to parts supplier Delphi.

Both firms denied their vehicles had been at fault.

Under Californian law, details of car accidents remain secret.

However, Google said its driverless cars had never been the cause of an accident and that the majority of "minor fender-benders(擦撞)" had been in the form of rear-end(后尾) collisions from other drivers.

"Safety is our highest priority. Since the start of our programme six years ago, we've driven nearly a million miles automatically, on both freeways and city streets, without causing a single accident," said a spokesperson.

Delphi told the BBC its vehicle was hit while still at a crossroads and was in human driving mode at the time.

"A police report indicates the fault of the accident is with the second vehicle, not Delphi. No-one was hurt in the incident," said a spokesperson.

An unknown source told the Associated Press that two of the accidents occurred while the vehicles were occupied by human drivers, and all four vehicles were going very slowly at the time of the collisions.

Chris Urmson, director of Google's self-driving car programme, wrote in a blog post that there have been 11 accidents involving Google cars since the project began six years ago but not one has been caused by one of its vehicles.

"Rear-end crashes are the most frequent accidents in America, and often there's little the driver in front can do to avoid getting hit," he said.

1.What is the passage mainly about?

A. Self-driving car accidents.　　 B. Motor vehicle problems.

C. Self-driving vehicle problems.　　 D. Traffic accidents in California.

2.We can learn from the passage that the self-driving cars ______.

A. caused the accidents when driven by human drivers

B. hit other cars and caused the accidents

C. were responsible for the accidents

D. were knocked into from behind

3.The passage intends to tell us that the self-driving cars ______.

A. are just road killers　　 B. need to be improved

C. are in good quality　　 D. shouldn’t be produced

高三英语阅读理解中等难度题查看答案及解析

A New York couple have been killed in a car crash on their way to hospital，but the unborn baby________ the accident.

A．experienced　　　 B．survived

C．escaped　　　 D．fled

高三英语单项填空中等难度题查看答案及解析

A New York couple have been killed in a car crash on their way to hospital，but the unborn baby________the accident.

A．experienced　             B．survived

C．escaped　             D．fled

高三英语单项填空中等难度题查看答案及解析

_______ a satisfactory operation, the patient recovered from illness very quickly.

高三英语单项填空简单题查看答案及解析

________its tests successfully, the driverless car will appear on the market soon.

A.Undergoing B.Undergone C.To undergo D.Having undergone

高三英语单项填空中等难度题查看答案及解析

Samples of blood from Cholera infected patients have been sent to the blood center _______.

高三英语单项填空简单题查看答案及解析

Every student has tests when they are at school. But have you ever been so worried about the tests that you can’t fall asleep at night? Have you ever felt sick or had a headache during a test?  ________1.   This worry in your mind can make your body feel bad. You may feel angry, frustrated, scared, or afraid, which can give you a stomachache or a headache.

________2.   Good or normal stress might happen when you are called to answer a question in class or when you have to give a speech. This kind of stress can help you to get things better done.   3.________

But bad stress can happen if the stressful feelings keep going over a long time. You may not feel well if your parents are fighting, if a family member is ill, if you are having problems at school, or if you are going through anything else that makes you upset every day.  ________4.________

________5.________  That means making good decision about how to spend your time. If you are only dealing with school stuff and have no time to play, you can get stressed. Make sure you keep your SELF in mind: Sleep, Exercise, Leisure and Food. If you take care of yourself and get enough sleep and food, and if you exercise and leave time for fun stuff, you will probably be less stressed out!

A．However, there are two different kinds of stress.

B．Can you tell a kind of stress from another one?

C．The best way to keep stress away is to have a balanced life.

D．That kind of stress isn’t going to help you, and it can actually make you sick.

E. Since bad stress is harmful to us, you’d better try to change it into good stress.

F. If so, then you know what stress is. Stress is what you feel when you are worried or uncomfortable about something.

G. For example, you may do a better job on your test if the stress pushes you to prepare well before the test.

高三英语其他题困难题查看答案及解析

He failed in the driving test again. He ________ .

A. must have disappointed                  B. must have been disappointed

C. might be disappointed                   D. couldn’t be disappointed

高三英语单项填空中等难度题查看答案及解析

My car's performance is ___ since the engine's been tuned and the tires have been changed．

A．better as twice                      B．twice as the condition

C．twice as good                        D．twice as better

高三英语单项填空中等难度题查看答案及解析