()more attention, the young trees could have grown much letter.
A. To give
B. Given
C. Giving
D. Having given
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A membership card authorizes () the club's facilities for a period of 12 months.
A. the holder using
B. the holder's use
C. the holder to use
D. the holder uses
关于肺动脉高压的形成机制,下列说法哪些是正确的
A. 缺氧导致肺小动脉痉挛
B. 肺毛细血管床减少、闭塞
C. 肺内肌型小动脉中膜增厚
D. 肺小动脉玻璃样变
E. 肺小动脉栓塞
If the ocean were free of ice, storm paths would move further north, () the plains of North America of rainfall.
A. to deprive
B. deprived
C. depriving
D. deprive
—"How about a game chess"()
A. I don't mind.
B. Why not
C. I agree.
D. Let's fight.