观察动物细胞有丝分裂的理想材料是

题干

观察动物细胞有丝分裂的理想材料是（　　）

A：活的肝细胞

B：口腔上皮细胞

C：发育着的受精卵

D：卵细胞

上一题下一题 0.0难度选择题更新时间:2016-08-03 06:04:33

读音选词根据所给句意和音标，从每题A、B、C、D四个选项中，选出一个最佳答案。
There will be heavy rain and strong wind next____. / wi:k /

How often do you exercise? I exercise ____ / wʌns/ a day.

The library is on the left____ /said / of the bank.

You'll ____ /feil/ in the final exam if you don't work harder.

If I had one million dollars, I'd give it away to ____ /′medikəl/ research.

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