高血压是遗传易感性和环境因素相互作用的结果,一般认为遗传因素所占的比例是()
A.60%
B.40%
C.50%
D.20%
E.30%
参考答案:B
漂白的其他混纺棉斜纹布
—_____ can I get to Beijing University if I take this bus?
—You may get there in half an hour. [ ]
A. Where
B. How
C. How soon
D. How often