If you are in the dangerous semicircle of a hurricane you can expect all of the following except ______.
A.backing winds
B.high seas
C.high winds
D.veering winds
第1题:
In cold, damp weather, the buildup of ice on airplane wings can pose significant aerodynamic problems. Which of the following effects would you expect?
A.As ice builds up on the top of the wing, drag increases.
B.As ice builds up on the top of the wing, lift increases.
C.As ice builds up on bottom of the wing, lift decreases.
D.All of the above
To answer this question, you need to understand the concepts of lift and drag. You also need to recognize that Table 1 provides the data relevant to the question. Ice building up on top of the wing would increase lift, since the higher the curved upper surface of the wing, the greater the difference between the speed of air moving under the wing and above it. It would also increase drag, as suggested by the third column of Table 1: notice how the wings with the higher upper surface also have greater drag. Finally, ice building up under the wing would decrease the speed of air moving under the wing and so reduce lift. Thus, all three effects would occur.
第2题:
"Can you ()with all the colors of the wind? Can you paint with all the colors of the wind?"
A、see
B、paint
C、write
D、draw
第3题:
(A) you can get
(B) that you can get
(C) what you can get
(D) which you can get
正确答案:D
解答参考:D.定语从句题。这是一个非限制性定语从句作为插入语直接跟在先行词books的后面,非限制性定语从句修饰物只能由which 引导。【译文】 这些书你可以在任何商店买到,并且能给你想要的任何信息。
第4题:
A、only
B、mere
C、just
D、merely
第5题:
The following hints may help you stay energized, or at least()until you can make the time for rest.
A、 get you going
B、 get you go
C、 get you went
第6题:
-- Can I help you with the bag?
-- _____
A. No, thank you. I can take it myself.
B. Thank you.
C. Sorry, you can't.
D. No, I am all right.
第7题:
A、on
B、at
C、after
D、for
第8题:
A、you can get
B、that you can get
C、what you can get
D、which you can get
第9题:
A. Did you finish the task on time?
B. Can you use the strategies we have learned today?
C. What did you do in your group work today?
D. Did you get all the questions right in today
第10题:
A .Are you self-confident?
B. Can you do it?
C .Are you self-reliant?
D .Will it work?
E .Is it worth?