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
做胃镜或钡餐造影有何发现
A. 食管下段静脉曲张
B. 胃体浅表炎症
C. 胃小弯有壁龛
D. 十二指肠壶腹部变形或有溃疡
E. 胃窦部有食物潴留
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