According to the passage, left-handedness ______.
A. is discouraged but not discriminated against
B. has caused discrimination as serious as sexism and racism
C. is a subject that has drawn more and more attention
D. is an advantage in running for public office
查看答案
The word "accumulated" in line 6 is closest in meaning to（）
A. spread out
B. changed
C. became denser
D. built up
在世界众多的港口中，年吞吐量曾超过1 000万公吨的港口有100多个，其中( )以上集中在发达国家。
A. 60%
B. 70%
C. 80%
D. 90%
How many of those trial implants fail to survive
A. 277
B. 276
C. 19
D. 4
当使用TCP进行数据传输时，如果接收方通知了一个800直接的窗口值，那么发送方可以发送（）。
A. 长度为2000字节的TCP包
B. 长度为1500字节的TCP包
C. 长度为1000字节的TCP包
D. 长度为500 字节的TCP包
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