Some people haven’t realized something as common as _______to the sun for a long time will do harm to their skin and even cause skin cancer.
A．exposing
B．being exposed
C．having exposed
D．exposed
答案：B
考查非谓语和省略。句意“一些人还未意识到像在太阳下暴晒太久对皮肤有伤害一样平常的事情。”skin和expose之间是动宾关系，故用被动，平常A、C、D。as... As句型中，第二个as是连词，后跟从句，从句的主语是动名词。故选B。
| 用方框中所给词的适当形式填空，使短文正确、通顺，每个词限用一次。 | |
students usually study very hard for long 1 . This is very good but it doesn't 2 a lot, for an effective student must have enough sleep, enough food and enough rest and exercise. Every day you need to go out for a walk or visit some friends or some nice places. It's good for your study. When you return 3 your studies, your mind will be refreshed (清醒) and you'll learn more 4 study better. Psychologists (心理学家) 5 that learning takes place this way. Take English learning 6 an example. First you make a lot of progress and you feel happy. Then your language study seems 7 the same. So you will think you're learning 8 and you may give up. This can last for days or even weeks, yet you needn't give up. At some points your language study will again take another big 9 . You'll see that you really have been learning all along. If you get enough sleep, food, rest and exercise, studying English can be very effective and 10 . Don't give up along the way. Learn slowly and you're sure to get good results. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. |