人工合成的促黄体素释放激素(LHRH)或促黄体素释放激素类似物(LHRH-A)注入鱼体代替鱼类自身的下丘脑释放的促性腺激素释放激素(GnRH)的作用,由它来触发垂体分泌促性腺激素(GtH)。
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He was so __________ that I burst into tears.
A. exciting
B. excite
C. excited
D. excites
She was _________ than her sister.
A. intelligent
B. more intelligent
C. intelligenter
D. much intelligent