选择题:1. Janet Loops ______________. A. had not bought

题目内容:
1. Janet Loops ______________.
A. had not bought her ticket B. was a traveler
C. was a train conductor D. had her wallet robbed
2. It is ____________ for overseas to keep their money and documents safe.
A. difficult B. precarious C. possible D. perilous
3. “Be alert” in Paragraph 2 means _____________.
A. be careful B. be watchful and ready to meet danger
C. be alternative D. be ready to stop thief
4. If you are a traveler, you should _______________.
A. not ask others to take your picture
B. put your passport, credit cards traveler’s checks and cash individually
C. not carry cash on you
D. stay alert and pack your common sense
5. The best title for the passage may be ________________.
A. How to Travel B. How to Keep Money Safe
C. Watch for Thieves D. Guard Against Disasters
参考答案:

A3 钢制成的两端铰支圆柱,当柱长l 与直径d 之 比l d 至少为( )时,才可以用欧拉公式计算该

A3 钢制成的两端铰支圆柱,当柱长l 与直径d 之 比l d 至少为( )时,才可以用欧拉公式计算该 柱的临界压力。 (A)5; (B)25; (C)50; (

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