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【简答题】
We often___________(play) on the playgound. 2. He _________(get) up at six o’clock. 3. Tom _______(brush刷) his teeth every morning. 4.What____(do) he usually do after school? 5.Danny_____(study)English at school. 6. Mike sometimes __________(go) to the park with his sister. 7. At eight at night, she ________(watch) TV with his parents. 8. Mike________(read) English every day. 9. How many lessons ______your classmates have on Monday? 10.His mother_________(not do) the housework every day.
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举一反三
【简答题】如果m、n为实数，且 ，则mn= 。
【简答题】设α、β表示两个平面，m，n表示不在α内也不在β内的两条直线，给出下列四个论断； ①如果m ∥ n、α ∥ β、n⊥α，则m⊥β；②如果n⊥α、m⊥β、α ∥ β，则m ∥ n；③如果m ∥ n、n⊥β、m⊥α，则α ∥ β；写出你认为正确的命题______．
【单选题】已知α．β是平面，m．n是直线，给出下列命题 ①若m⊥α，m ∥ β，则α⊥β ②如果m⊥α，m⊥β，则α ∥ β ③如果m?α，n?α，m，n是异面直线，那么n不与α相交． ④若α∩β=m，n ∥ m且n?α，n?β，则n ∥ α且n ∥ β． 其中真命题的个数是（ ）
A.
1
B.
2
C.
3
D.
4
【简答题】如果m，n互为倒数，则3m?5n=______．
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