问题 单项选择题

营养供不应求时,动物机体会分解自身某些组织以维持生命,其分解顺序为()。

A、脂肪→肌肉→骨→胚胎

B、胚胎→肌肉→骨→脂肪

C、肌肉→脂肪→骨→胚胎

D、脂肪→肌肉→胚胎→骨

答案

参考答案:A

阅读理解

阅读下面短文,然后从各小题所给的四个选项中选出最佳选项.

    People in Canada often talk about the weather. Do you want to know about the weather in Canada?

Let's look at what the seasons are like in Canada.

Spring

  Spring starts in April, with lots of rain. The weather is still cool.Spring is a very short season and before

you know  lt,  summer arrives!

Summer

  The summer starts in late May or early June. Summer can be very hot in Ottawa. It is also very wet.

People like wearing shorts and T-shirts in summer.

Autumn

   Autumn comes in September or October. It is a very beautiful season. The leaves on the trees become

colorful: orange, red, yellow ... It is neither too cold nor too hot in autumn.

Winter

    The winter is from late November to late March. It can be very cold, with lots of snow. It is often sunny in winter, but the sunniest days are always the coldest!

1. How many seasons does the writer talk about?         

A. One.      

B. Two.        

C. Three.    

D. Four.

2. How is the weather in summer?

A. Warm and rainy.

B. Wet and cold.

C. Hot and wet.

D. Hot and dry.

3. The leaves on the trees become colorful in______.                   

 A. spring    

B. summer

C. autumn    

D. winter

4. The winter ends in _____,

A. late March

B. late November      

C. early April

D. early October

5. What's the main idea of the passage?           

A. The people in Canada.

B. The seasons in Canada.

C. The famous places in Canada.

D. The foods in Canada.

选择题