引起此病最常见的细菌为
A. 葡萄球菌
B. 链球菌
C. 幽门螺杆菌
D. 军团菌
E. 克雷伯杆菌
What reason do Americans give for the reduction in traffic accidents？
A. Their imposition of speed limit.
B. Their introduction of driving tests.
C. Their guide to inexperienced drivers.
D. The rise in their traffic density.
What is the attitude of British authorities concerning speeding laws？
Approval.
B. Disagreement.
C. Indifference.
D. Suspicion.
Speeding is a motoring offence a driver commits when he does the following things except______.
A. driving faster than 70 miles per hour on any road
B. driving faster than the limit on a restricted road
C. exceeding the limit of 30 miles per hour on any road
D. exceeding the limit for certain vehicles on any road
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