固体废物的机械破碎方法分为()、()、()、磨剥、冲击等方法。
参考答案:压碎;劈碎;剪切
补全对话,每空一词。
A: Hello, Jack! 1______ was your weekend?
B: It was great.
A: So, what did you 2______?
B: On Saturday morning I 3______ my homework. On Saturday afternoon I 4______ to the movies with
my parents. On Sunday morning I visited my aunt, and on Sunday afternoon I 5______ basketball with
my friends.
A: Sounds like you had fun.
B: How 6______ your weekend?
A: It wasn't very good.
B: 7______ did you do then?
A: On Saturday I 8______ my mother do the housework. And on Sunday I studied 9______ the Chinese test.
B: You 10______ a busy weekend.
A: Oh, yes.
以下地区中,前列腺癌发病率最高的是()。
A.中国
B.北美
C.非洲
D.东南亚
E.澳大利亚