What does the news item mainly report about U.S.？
A competition is held to draw talented students to aerospace career.
B. It has the leading position in the space field.
C. A global rocket launch program is held by engineering students.
D. It is losing its competitive edge in the aerospace industry.
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The academy suggests that children under age two
A. get a little entertainment.
B. have more activities.
C. receive early education.
D. have regular checkups.
The eye of a typhoon is the place where
A. it is relatively calm.
B. the strongest winds are.
C. the strongest rains are.
D. the wind does not move.
According to the conversation, what upsets the man？
A. He doesn't know what color to choose.
B. He has a broken rucksack.
C. The gift he wants is out of stock.
D. He doesn't know what gift will be useful.
The "cloak" scientists have invented
A. can keep an object invisible in three dimensions.
B. can hide an object from detection only in one direction.
C. is a true invisibility cloak.
D. is just a minor achievement.
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