绝大多数雌鸟的生殖腺和输卵管（）。A、左侧的卵巢和输卵管退化

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问题单项选择题

绝大多数雌鸟的生殖腺和输卵管（）。

A、左侧的卵巢和输卵管退化

B、右侧的卵巢和输卵管退化

C、左右两侧的卵巢和输卵管都退化

D、右侧的卵巢退化，输卵管不退化

答案

参考答案：B

填空题

根据句意和首字母或汉语提示，将单词的正确形式写在题中相应的横线上。

1. I hope to go to Taiwan one day to enjoy the b___________ sights there.

2. He is too fat. His mother asks him to eat more vegetables and l___________ meat.

3. She was very ill, but ___________ (幸运地) she is now out of danger.

4. We will have a meeting on ___________(周四) afternoon.

5. It is well-known that there are four ___________(季节) in a year.

问答题

肌节与肌梭