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【多选题】
下列药材来源于芸香科植物的是:A.
厚朴
B.
黄柏
C.
皮
D.
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【简答题】听对话，回答问题。 1. How long has Bob been collecting kites? [ ] A. About two years B. About three years C. About five years 2. Where does Bob usually fly kites? [ ] A. On the mountain. B. By the rive...
【简答题】According to scientists at the U.S. National Snow and lee Data Center, within about 60 years, there will be ______on the Arctic Ocean.
【单选题】无线局域网是计算机网络与无线通信技术相结合的产物，无线局域网的IEEE802．11系列标准中，______标准是应用最广泛的。
A.
IEEE802.11a
B.
IEEE802.11b
C.
IEEE802.11c
D.
IEEE802.11b+
【单选题】About 698,000 laptops were sold in China in ____second quarter, ____12.1 percent increase from a year ago.
A.
a； a
B.
the； a
C.
the；the
D.
a； the
【单选题】People Migrated from Asia to the Americas From the beginning of history until about 500 years ago, the peoples of the Eastern Hemisphere and Western Hemisphere had almost no contact with each other. S...
A.
Y
B.
N
C.
NG
【简答题】已知下列命题 : “ 唯物主义者都不是有神论者。 ” 为真,请指出其同素材的另外三个性质命题的真假。
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