53题
A. answer
B. speak
C. talk
D. tell
患者，因高热2 E1未能进食，自述口渴、口干、尿少色黄。查：脱水症，尿比重l.028血清钠浓度为l56mmol／L。治疗时首先应给予
A. 3％～5％高张盐水
B. 5％碳酸氢钠
C. 5％葡萄糖溶液
D. 葡萄糖盐水
E. 平衡盐水
49题
A. People spend more time at shopping centers that have trees.
B. In hot countries, urban forests are cool places for walking and other healthy exercises.
C. But you are not in rural area.
D. Trees take pollution out of the air
E. In 2033, it will have 5 million trees
F. It has many kinds of birds in the countr
流行病学观察性研究方法不包括
A. 病例对照调查研究
B. 实验性研究
C. 队列研究
D. 生态学研究
E. 横断面研究
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