火成岩按所含矿物的结晶颗粒的绝对大小可分为:()
A.显晶质结构、粗粒结构
B.显晶质结构、隐晶质结构
C.隐晶质结构、非晶质结构
D.隐晶质结构、玻璃质结构
参考答案:B
排球运动
—May I speak to your manager Mr.Williams at five o’clock tonight?
—I’m sorry. Mr. Williams ________ to a conference long before then.
A.will have gone
B.had gone
C.would have gone
D.has gone