What's the author's initial reaction when he found his notebooks lost？
A. He was indifferent.
B. He was worried.
C. He was pleased.
D. He was excited.
【B17】
A. morning
B. break
C. afternoon
D. noon
听力原文：Why did the Johns Hopkins astronomers make a mistake？
(29)
A. Because the American Astronomical Society offered wrong data.
Because they included the wrong star systems in their observation.
C. Because they were misled by newspapers and television reports.
D. Because there is a mistake in the computer software they used.
The fact that the management is trying to reach agreement_____five separate unions has led
A. over
B. upon
C. in
D. with
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