X连锁显性遗传病,如妻患病,出生儿发病几率为____,如夫患病,女儿发病几率为____,故只能允许生____胎。
You can _____ some bottles of wine, or some chocolates, or a bunch of flowers.
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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