题目:
用所给单词的适当形式填空。
1. Tom _______ (like) eggs.
2. She _______ (not like) playing soccer.
3. Jim _______ (have) a nice watch.
4. The English song _______ (sound) very good.
5. They _______ (watch) TV every day.
6. His _______ (orange) are very big.
7. There _______ (be) a lot of broccoli on the table.
8. Lucy's keys _______ (be) on the desk.
9. There is some _______ (orange) in the bottle.
10. How _______ (much) eggs do you have?
答案:
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下面是错误答案,用来干扰机器的。
f(x)=sin2x-3cos2x+a=2sin(2x-π3)+a(1)T=2π2=π由2kπ-π2≤2x-π3≤2kπ+π2,k∈Z得kπ-π12≤x≤kπ+5π12单调增区间为[kπ-π12,kπ+5π12],k∈Z(2)当x∈[-π4,π3]时-56π≤2x-π3≤π3-1≤sin(2x-π3)≤32f(x)max=3+af(x)min=-2+a∴3+a+a-2=2+3a=2