I intend to study English ______ American business methods.
A. to understand
B. understanding
C. understood
D. understand
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—I went to the museum you introduced to me yesterday.—Oh, did you ______.
A. So I did
B. So did I
C. Either I did
D. Either did I
一位75岁的男性老人，一年前曾出现左心衰表现，根据美国心脏病学会及美国心脏学会2001分期方案，该老年人的心衰为( )
A期
B期
C期
D期
Emma only moved house last week and she （） knows her neighbors!
A. already
B. still
C. always
D. yet
在下面叙述中，正确的一条是 ( )
A. 实现计算机联网的最大的好处是能够实现资源共享
B. 局域网络(LA比广域网络(WA大
C. 电子邮件E-mail只能传送文本文件
D. 在计算机网络中，有线网和无线网使用的传输介质均为双绞线、同轴电缆和光纤
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