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【单选题】
有关红细胞生成素的叙述,错误的是A.
促使网织红细胞从骨髓释出
B.
促进红系干细胞增生和成熟
C.
主要由肾皮质近曲小管管细胞分泌
D.
贫血时,红细胞生成素合成减少
E.
与红系干细胞受体结合而发挥作用
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【单选题】在环境与资源保护法中关于防治环境污染，尤其是控制有毒有害物质的规定体现的生态规律主要是
A.
“物物相关”律
B.
“相生相克”律
C.
“能流物复”律
D.
“负载定额”律
【简答题】Listen to a talk and complete the table below. Write the appropriate letters A-G against Questions 1-8. Places: Main Gymnasium Squash and Racquetball Fitness and Weight Room Multi-purpose Room Gym Equ...
【简答题】A．One is safe if he is very careful. B．Hi-tech safety equipment ensures one's safety. C．A lot of people do rock-climbing and they are OK. D．There are no erous places nearby to do rock-climbing.
【单选题】I couldn’t afford the ticket, so I had to watch the __________TV broadcast of Sun Nan’s concert at home.
A.
lively
B.
live
C.
alive
D.
living
【单选题】Nuclear energy is an efficient and convenient substitute for conventional forms of energy which were found in special geographical locations. Large amounts of 【B1】______ and effort are required to 【B2...
A.
capital
B.
incentive
C.
interest
D.
currency
【简答题】Listen to the passage and fill in the missing words: Exercise 2: Blank filling. 1. The cost of the hardware and computer software program is 1)___________ . 2. Kyra Constam of Blue Goji says the virtu...
【单选题】I study hard ________ I may not fail in the examinations. [ ]
A.
so as to
B.
in order to
C.
in order
D.
so that
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