题目内容
-You’re dropped __________ “s” in the word “across”.
-Oh, you are right, __________ letter “s” should be doubled like this “cross”.
A.a, a | B.an, a | C.an, the | D.the, a |
C
解析试题分析:句意:在单词”across”当中,你丢了一个”s”.——哦,你说的对。想这个“cross”一样,这个字母“s”应该双写。结合语境可知上文泛指任何一个字母“s”故用不定冠词,s词首音素是元音,故不定冠词用an。下文特指某个字母,故用定冠词,选C。
考点:冠词
点评:冠词是一种虚词,一般用于名词前面表示特指或者泛指某一个。冠词的应用都用一定规则,熟记这些规则是解题的关键。不定冠词用在名词前,表示泛指任何一个。定冠词用在名词前表示特指某一个。在专有名词及表示泛指的复数名词前一般不要冠词,叫做零冠词。需注意的是不定冠词的用法是看词首音素,不是看首字母,如:useful首字母是元音,但是词首音素时辅音,故不定冠词用a;hour首字母是辅音,但是词首音素是元音,故用冠词an。
完型填空(共15小题,计15分)
Benjamin was 1 . He didn't know why. He was having a fever and tired and didn’t feel like eating. His stomach hurt from time to time. At first he paid very little 2 to it, thinking he would be all right in 3. But he didn't. After three weeks, he had to go to Dr. Barkley.
The doctor did a few 4 . Then he asked Benjamin if he had gone 5 and drunk dirty water. Benjamin said he hadn't been camping since he was a soldier in the army.
He asked if Benjamin had eaten at any fast food restaurants in the past month, or eaten from one of the 6 lunch trucks in the Los Angeles area. Benjamin said that he ate fast food or lunch truck food every day at noon.
“That’s probably the 7 of your illness. You have hepatitis(肝炎) A, and you most likely got it from a food worker who didn't wash his hands thoroughly after using the 8. It happens a lot.” “God! I'm not going to die, am I?”
The doctor told him not to 9 . A viral infection(病毒感染) that 10 the liver(肝脏), hepatitis A kills only about 100 people every year in the US. He told Benjamin to see him every two weeks, and to be 11 to take three months 12 from work so that he could rest, rest, rest. There is no 13 to hepatitis A. You survive(存活), or you don’t.
“But there is one good thing about hepatitis A,” Dr. Barkley said. “ 14 you get it, you’re immune(免疫) to it for the 15 of your life.”
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Children can spend hours a day looking at computer screens and other digital devices. Some eye doctors say this leads to an increase in “computer vision syndrome(电脑视力综合症).”
Nathan Bonilla-Warford is an optometrist(验光师)in Tampa, Florida. He has seen an increase in problems in children. “A lot more children come into the office either because their parents have noticed that they have headaches or red or watery eyes or discomfort, or because their nearsightedness appears to be increasing and they’re worried,” he says.
Dr. Bonilla-Warford says part of the problem is that children may be more likely to pay no attention to early warning signs than adults. “Even if their eyes start to feel uncomfortable or they start to get a headache, they’re less likely to tell their parents, because they don’t want to have the game or the computer or whatever taken away,” he explains.
He says another part of the problem is that people blink(眨眼)less often when they use digital devices. He says, “A person who uses an electronic device blinks about one third as much as we normally do in everyday life. And so that can result in the front part of the eye drying and not staying protected like normal.”[来源:Z.xx.k.Com]
Eye doctors offer suggestions like following which is known as the 20/20/20 rule. That means every twenty minutes look away twenty feet or more for at least twenty seconds from whatever device you’re using.
Other suggestions include putting more distance between you and the device and using good lighting. Of course, another way is to spend less time looking at screens. Many experts say children should spend no more than two hours a day using digital devices—with no screen time for children under two.
But not all eye doctors have noticed an increase in problems in children. Dr. David Hunter, from Children’s Hospital Boston, has not seen an increase in his practice. “While it is possible to develop fatigue looking at screens for a long period of time, there’s certainly no proof that it actually causes any damage(伤害)to the eyes.” he says.
1.Which of the following is true according to the passage?
A.Dr. Bonilla-Warford thinks using computers causes nearsightedness. |
B.People keep their eyes protected against drying by blinking normally. |
C.Children under two can watch TV for less than two hours a day. |
D.Dr. David Hunter says headache causes an increase in eye problems. |
2.What does the underlined word “fatigue” mean?
A.Interest |
B.Ability |
C.Tiredness. |
D.Difficulty. |
3.What can be the best title for the passage?
A.Looking at Screen: Two Hours or More |
B.How Can Children Use Their Eyes Properly |
C.Using Digital Devices: Advantages and Disadvantages |
D.How Much Screen Time Is Too Much for Children |