写出下列繁体字相对应的简体字。(3分)
滅——
参考答案:滅——灭
-Look,Dad! There are _______of stars in the sky.
-It will be a fine day tomorrow.Let's go swimming.[ ]
A. ten
B. tens
C. two million
D. millions
收集研究资料的方法有哪些?