目前，核能发电是利用（）发电。
A.核聚变
B.核裂变
C.氢聚变
D.其他三个选项都不是
参考答案：B
痰浊内盛型肥胖的主症是（）
A.形盛体胖
B.自汗喘促
C.头晕目眩
D.胸膈痞满
E.肢体困倦
Which of the following is NOT true about unwanted e-mail
A．It costs money to receive them.
B．It's free to store them.
C．It takes time to access them.
D．It takes time to throw them away.
