Your computer doesn’t work。.You’d better have...

Your computer doesn’t work。.You’d better have it ________.

A．to repair          B．repairing        C．repaired          D．to be repaired

九年级英语单项填空中等难度题查看答案及解析

—Your CD player doesn’t work. You’d better ________.

—There’s no need. I’ll try to do it myself.

A.have it repaired B.have repaired it C.repair it D.not to repair it

九年级英语单选题中等难度题查看答案及解析

I am afraid there’s ______________with the computer. It doesn’t work. Can you come and have a look?

A.wrong anything      B.anything wrong      C.wrong something          D.something wrong

九年级英语单项填空中等难度题查看答案及解析

CHICAGO- Have you ever worked on your laptop computer with it sitting on your lap, heating up your legs? If so, you might want to rethink that habit from now on. Doing it a lot can lead to “toasted skin syndrome (症状)”, an unusual-looking spotted skin condition caused by long-term heat exposure (暴露), according to medical reports.

In one recent case, a 12-year-old boy from California developed a skin discoloration on his left lap after playing computer games a few hours every day for several months. “He recognized that the laptop got hot on the left side; however, he did not change its position,” Swiss researches reported in an article published Monday in the journal Pediatrics.

Another similar case is a Virginia law student who needed treatment for the spotted darkening on her leg. Dr. Kimberley Salkey, who treated the young woman, learned the student spent about six hours a day working with her computer placed on her lap. As Dr. Salkey later learnt, the temperature under the laptop could reach 51 degrees. That case, from 2007, is one of 10 laptop-related cases reported in medical journals in the past six years.

The condition can also be caused by overuse of heating pads (垫子) and other heat sources that usually aren’t hot enough to cause burns. It’s generally harmless but can also cause such permanent (永久的) skin darkening. In very rare cases, it can cause damage leading to skin cancers, said the Swiss researchers, Drs. Andreas Arnold and Peter Itin from University Hospital Basel. They do not mention any skin cancer cases linked to laptop use, but suggest, to be safe, placing a carrying case under the laptop if you have to hold it on your lap.

Dr. Kimberley Salkey said that under the microscope, the affected skin is similar to skin damaged by long-term sun exposure.

Major producers including Apple and Dell warn against placing laptops on laps or exposed skin for long periods of time because of the risks for burns. In the past, “toasted skin syndrome” has happened to workers whose jobs require being close to a heat source, including bakers and glass blowers, and in people who gathered near hot stoves to stay warm.

Dr. Anthony J. Mancini, chief at Children’s Memorial Hospital in Chicago, said that it’s unlikely that computer use would lead to cancer since it’s so easy to avoid close skin contact (接触) with laptops.

1.According to the passage, “toasted skin syndrome” can be caused by all the following EXCEPT ______.

A. being close to a heat source or hot stoves　　 B. long period of direct contact to hot laptop

C. using one’s laptop with a carrying case　　 D. overuse of heating pad and other heat sources

2.The underlined word “discoloration” in the 2nd paragraph refers to ______.

A. spot　　 B. darkening　　 C. sunburn　　 D. heat

3.It can be learnt from the passage that laptop users ______.

A. should avoid close skin contact with laptops

B. are likely to develop a certain kind of cancer

C. have known much about the harm of laptop heating

D. should go to see the doctor at once

4.Some computer producers warn against placing laptops on laps for long periods of time because of ______.

A. the risk for burns　　 B. the risk of dropping

C. the risk of breaking　　 D. the protection of back bone

5.Which of the following might be the best title of the passage? ______.

A. Laptop is Dangerous　　 B. Skin Damage is Possible

C. A Bad Habit　　 D. No laps for Warm Laptops

九年级英语阅读理解困难题查看答案及解析

It's cold outside. You'd better your coat and scarf.

A．work out          B．put out           C．have on           D．put on

九年级英语单项填空中等难度题查看答案及解析

---Excuse me, I bought a computer from your shop last week, but it doesn’t work now.

---It doesn’t matter, madam. It _________ today.

A. will repair　　 　　 　 B. has repaired

C. will be repaired　　　 D. will repaired

九年级英语单项填空中等难度题查看答案及解析

--- May I use your computer?

--- Sorry, it doesn’t work. It _______ mending.

A. remembers 　　 B. reminds

C. receives 　　 D. requires

九年级英语单项填空中等难度题查看答案及解析

--- May I use your computer?

--- Sorry, it doesn’t work. It _______ mending.

A. remembers B. reminds C. receives D. requires

九年级英语单项填空中等难度题查看答案及解析

—What's wrong with your computer?

—It doesn't work. I think there must be ________with it.

A.nothing wrong B.wrong nothing C.something wrong D.wrong something

九年级英语单选题困难题查看答案及解析

--This computer doesn't work, Sir.

--Well, bring it back, ______ we'll return your money.

A. and　　　　　 B. so　　　　　 C. but　　　　　 D. because

九年级英语单项填空中等难度题查看答案及解析