题目内容

4.随着培养细胞传代次数的增加，细胞群体中表达衰老相关的β-半乳糖苷酶的细胞日益减少。

A. 对
B. 错

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[音频]Decide whether the following statements are true(T) or false (F).The company is based in the north of England.

A. 对
B. 错

The founder of the company was Nigel's uncle.

A. 对
B. 错

It was founded in 1960.

A. 对
B. 错

Its latest product is a new optical instrument.

A. 对
B. 错