D-葡萄糖在碱性溶液发生变旋现象，其溶液中共存的糖有( )。
A. 1种；
B. 2种；
C. 3种；
D. 4种。
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The most popular newspaper in Ireland is ().
A. The Irish Times
B. The Irish Press
C. The Irish Independent
D. The Irish Daily
A programmed computer begins to show on its screen the figures you need（）
A. when switched on
B. switched on
C. to be switched on
D. being switched on
The beauty of the West Lake in Hangzhou is beyond description.（）
A. 杭州西湖之美，笔难尽述。
B. 杭州西湖的美丽是不能描述的。
C. 杭州西湖之美，尽在描述之中。
D. 杭州西湖的美丽超出了可描述的范围。
The decision to invade provoked storms of protest.()
A. caused
B. ignored
C. organized
D. received
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