我国学者一般把完全形成的人分为()
①早期猿人和晚期猿人 ②早期智人和晚期智人
A. ③腊玛古猿和
B. 南方古猿
C. ④埃及古
D. 猿和森林古猿
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复合管的穿透电流等于组成它的各三极管穿透电流之和。()
A. 正确
B. 错误
A．on thatB．on whichC．at thatD．at which
A. on that
B. on which
C. at that
D. at which
—Hello! Can I speak to Alice, please？ —Sorry. She isn’t in at the moment. —______？ Please
A. Could I leave a message
B. Can you hold the line
C. Will you put me through
D. May I take a message
A sound personal health choice is often difficult to make because______.
A. current medical knowledge is still insufficient
B. there are many factors influencing our decisions
C. few people are willing to trade the quality of life for longevity
D. people are usually influenced by the behavior. of their friends
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