[单项选择]A strike is usually resorted to only when less __________ measures fail.


A. watertight
B. drastic
C. prevalent
D. adverse

[单项选择]The author believes that only when（）can you take notes efficiently.
A. you become interested in the fly buzzing on the windowpane
B. you pay your undivided attention on lectures
C. you are distracted by a peculiar habit of the lecturer's
D. you let your mind wander

[单项选择]Only when he had done it （） that he had made a mistake.
A. he then realized
B. did he realize
C. before he realized
D. he realized

[单项选择]Only when you have acquired a good knowledge of grammar ______ write correctly.

[单项选择]It is only when you nearly lose something______you will fully realize how much you value it.


A. before
B. that
C. do
D. will

[单项选择]Only when he has lost his way ______ that he wasn' t careful enough to make sure that he really did understand.


A. he realize
B. he can realize
C. he has realized
D. does he realize

[单选题]Only when weather condition in not below the captain’s weather minima is VFR flight below _______ meters allowed.
A.100
B.150
C.200
D.300

[单项选择]

Very high waves are destructive when they strike the land. Fortunately, this seldom happens. One reason is that out at sea, waves moving in one direction almost always run into waves moving in a different direction. The two sets of waves tend to cancel each other out. Another reason is that water is shallower near the shore. As a wave gets closer to land, the shallow bottom helps reduce its strength.
But the power of waves striking the shore can still be very great. During a winter gale, waves sometimes strike the shore with the force of 6,000 pounds for each square foot. That means a wave, 25 feet high and 500 feet along its face, may strike the shore with a force of 75 million pounds.
Yet the waves, no matter how big or how violent, affect only the surface of the sea. During the most raging storms, the water a hundred fathoms (600 feet) beneath the surface is just as calm as on a day without a breath of wind.

It is clear from the passage th
A. is the only factor influencing the strength of high waves
B. influences the power of high waves
C. has no influence upon the strength of very high waves
D. is irrelevant to the question of the power of high waves

[单项选择]Develop is only cheaper when you are doing a lot of enlargements.


A. 当你做了一些放大工作之后；，冲洗费只会更便宜。
B. 当你做了一些放大工作之后，开发费只会更便宜。
C. 如果你妻放大的照片数量大，冲洗费只会更便宜。
D. 如果你要放大的照片数量大，开发费只会更便宜。

[单项选择]The threat of a general strike was ______ only by prompt government action.
A. averted
B. diverted
C. subverted
D. deviated

[单项选择]Shumei started to write letters when she was only ten months old.

[单项选择]Although he was disabled when he was only ten years of age, yet he aimed （　）, for which his classmates spoke （　） of him.
A. high; high
B. highly; highly
C. highly; high
D. high; highly

[单项选择]

When I was 13 my only purpose was to become the star on our football team. That meant  21 Miller King, who was the best   22  at our school.
Football season started in September and all summer long I worked out. I carried my football everywhere for      23   .
Just before September, Miller was struck by a car and lost his right arm. I went to see him after he came back from   24  . He looked very   25  , but he didn’t cry.
That season, I  26  all of Miller’s records while he   27  the home games from the bench. We went 10-1 and I was named most valuable player,   28  I often had crazy dreams in which I was to blame for Miller’s   29  .
One afternoon, I was crossing the field to go home and saw Miller  30   going over a fence—which wasn’t  31  to climb if you had both arms. I’m sure I wa
A. us
B. yourself
C. me
D. them