【名词&注释】
蒲公英(dandelion)、舌状花亚科
[单选题]葡萄的卷须为茎卷须，豌豆的卷须为叶卷须。( )
A. 正确
B. 错误
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举一反三：
[单选题]BHave you ever wondered?
A. 1.Why do airplanes take longer to fly west than east?
B. It can take five hours to go west-east from New York(NY) to London but seven hours to travel east-west from London to NY. The reason for the difference is an atmospheric phenomenon know as the jet(喷射) stream. The jet stream is a very high altitude wind which always blows from the west to the east across the Atlantic. The planes movement a constams air speed thus go faster in the west-east direction when the air moving with the wind than in the opposite direction.
C. 2 What would happen if the gravity on Earth was suddenly turned off?
D. Supposing we could magically turn off gravity. Would buildings and other structures float away? What happened would depend on how strongly the things were attached to the Earth. The Earth is moving at quite a speed moving at over a thousand miles per hour. If you turn something round your head on a string, it goes around in a circle until you let go of the strong go of the string. Things not attacked to the Earth would fly off in a straight line . People in buildings would suddenly shoot upwards at a great speed until they hit the ceiling. Most things would fly off into space.
E. 60.What information coa we get from the first passage?
F. tis the iet stoomn that affeets how fast airplanes fly.
G. Planes go slower when they are moving with the wind.
H. It takes more time to fly from NY to London than from London to NY.
I. The jet stream always blows from the east to the west across the Atantic.
[单选题]How did the author probably feel after he talked with his friend?
A. Proud.
B. Pitiful.
C. Surprised.
D. Regretful
[单选题]以下六句话分别编为四组．全部表现江皋“所在有声绩”的一组是①性敏慧，弱冠举于乡
A. ②为完久计，民号之曰“江公堤”
B. ③时刺取其渠魁击杀之，盗遂息
C. ④饷应期至，军乃戢
D. ⑤守臣当先以身殉⑥柳民欢呼戴上恩德
E. ①②④
F. ②③④
G. ①⑤⑥
H. ③⑤⑥
[单选题]I had great difficulty________the suitable food on the menu in that restaurant.
A. find
B. found
C. to find
D. finding
[单选题]蒲公英的花梃被折断后会流出乳汁，故属于舌状花亚科。( )
A. 正确
B. 错误
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