一、词汇运用
1. Read the
instructions
(用法说明) carefully before you use the app to make a short video.
2. The teacher always puts red
marks
(标记) next to the wrong answers.
3. Clean the
brushes
(画笔) after painting in time. They are difficult to clean after the paint dries.
4. The teacher wrote on the blackboard with a piece of
chalk
(粉笔).
5. It is
usual
(寻常的) to start a conversation with the subject of the weather.
6. It's terrible that many teenagers are
crazy
(迷恋的) about watching short videos.
7. Robots can do
dangerous
(danger) work for us.
8. It started raining right after I hung my clothes outside. How
unlucky
(luck)!
二、根据句意，在所学词的前面加上正确的前缀
1. It's
impossible
(possible) for us to finish the work within hours.
2. He stopped walking at the crossing,
unsure
(sure) about which road to choose.
3. If someone doesn't show good manners (举止) to others, he is
impolite
(polite).
4. The shopkeeper gave me an
unfriendly
(friendly) look when I wanted to try on a third pair of jeans.
5. Don't believe him. What he told you is
incorrect
(correct).
6. It's
unusual
(usual) to see snow in June. It's usually hot.
7. — Would you like to eat some fried chicken?
— No, thanks. I think it tastes delicious but is
unhealthy
(healthy).
8. My homework is
incomplete
(complete) because I forgot to do the last two Maths problems.
三、单项填空
（
D
）1. — Could you tell me how to book a ticket to the Summer Palace?
— Well, just follow the ______ on the website.
A. information
B. attention
C. inventions
D. instructions
（
C
）2. — When do you think is the best time to visit Yili?
— You ______ go there in May. You can see the green grasslands and snow mountains at the same time.
A. have to
B. must
C. had better
D. would like
（
C
）3. We can put "un-" before the following words to give them the opposite (相反的) meaning except (除了) "______".
A. able
B. comfortable
C. important
D. active
（
B
）4. — Don't forget your umbrella!
— ______.
A. Yes, I do
B. No, I won't
C. Sorry, I can't
D. That's right
（
A
）5. — I don't care what people think.
— Well, you ______. Some ideas are worth listening to.
A. should
B. may
C. can
D. will
（
C
）6. The policeman found ______ in the house, so he left at last.
A. anything unusual
B. unusual nothing
C. nothing unusual
D. something unusual
（
D
）7. — Why not ask Ellen to join in our game?
— ______. She's preparing for an important speech tomorrow.
A. Of course not
B. I'm afraid so
C. I don't think so
D. You'd better not
