Russian, Jack has to study a second foreign language（）
A. Except
B. However
C. In addition to
D. Moreover
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Before she went abroad she spent as much time as she could English（）
A. practice to speak
B. practicing speaking
C. practice speaking
D. to practice speaking
下列属于广域网的是。 （请选择3个答案）（）
A. 中国公用分组交换网
B. 中国公用数字数据网
C. 企业内部网
D. CNGI（China Next Generation Internet）
If he more carefully, he the car accident yesterday（）
A. drive, would not have
B. had driven, would not have had
C. had driven, would have
D. drive, would not have had
下列昆虫拉丁名书写正确的为（）
A. Lucanus fortunei Saunders
B. Lucanus Fortunei Saunders
C. Lucanus fortunei Saunders
D. Lucanus fortunei saunders
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