试题与答案

简述对雌性动物采集精液调教方法及注意问题。

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题型：问答题 简答题

题目：

简述对雌性动物采集精液调教方法及注意问题。

答案：

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参考答案：①播种后能马上发芽出苗，且根与芽几乎同时生长；②下胚轴无膨大，无愈伤组织化；③同步化程度较高或经分选后能达到大小基本一致，使包裹制作的人工种子发芽生长整齐；④活力强，有一定的指逆性；⑤发...

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题型：阅读理解

阅读理解。

     Last year, we spent Christmas and New Year in Queensland, Australia. The beaches there were beautiful,

and we spent a lot of time playing by the sea, swimming and surfing. One day, we were on a beach just south

of a city called Cairns. My little sister was looking for shells in the sand down near the waves when she shouted

to me, "Hey, Lan! Look what I've found!" I ran down to have a look, and saw her pointing at a strange black

object that was half buried (掩埋) in the sand, "What is it?" she asked. I said I didn't know.

     Just then, my father came over, "Are you enjoying yourselves, you two?" he asked. Then he saw the strange

black thing. "What's that?" he said, bending down to take a closer look. Suddenly, he said, "Quick kids, get away

from here. Go and play somewhere else."

     We went and played further down the beach, while Dad ran up to the shop near the beach to make a phone

call. About 20 minutes later, we heard the noise of cars and trucks arriving, and a lot of soldiers ran onto the

beach. They told everyone to leave the beach and stay away from it.

     About half an hour later, we were sitting with Dad in a café a few hundred metres from the beach, when

we heard an enormous explosion (爆炸). "What was that?" we asked Dad. "That was the thing you found," he

said."One of the soldiers down there told me it was a Japanese bomb (炸弹) from World War II. Sometimes

they get washed up on the beaches here."

1. The object they found was _______.

A. in the sand near the water

B. in the sea

C. lying on the beach

D. floating (漂) on the sea

2. When Dad saw the object, he _______.

A. told the kids to play with it somewhere else

B. knew it was something dangerous

C. decided to move it quickly

D. picked it up to take a closer look

3. Dad went to a shop near the beach _______.

A. to meet the soldiers

B. to buy some drinks for the kids

C. to call for help

D. in order to get away from the beach

4. The bomb on the beach _______.

A. was washed up by accident

B. killed many people

C. was put there by the Japanese

D. was carried away by the Australian soldiers

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