logo - 刷刷题
下载APP
【简答题】

阅读理解。
There are 47 different kinds of kangaroos(袋鼠). The smallest are about a quarter of a meter long;
the biggest are taller than a man.
Kangaroos have very long strong back legs. These are used for jumping. They also have long strong
tails (尾巴) used for resting on. Kangaroos' front legs are much shorter, and are almost like arms.
Kangaroos' heads are quite small, but their ears are quite large.
Mother kangaroos have a pocket at the front. They have one baby each year. When it is born, the
baby kangaroo goes straight into its mother's pocket. The baby kangaroos stay there for six months.
The biggest kangaroos stand more than 2 meters tall, and their legs are so strong that they can jump
more than 9 meters. They are very fast, and can travel at more than 50 kilometers an hour. They are very
strong, but only eat fruit, leaves and grass.
1. How many different kinds of kangaroos are there?
A. seven
B. sy-four
C. fourty-seven
D. forty-seven
2. How large is a big kangaroo?
A. Smaller than a man
B. Bigger than a man
C. The same size as a man
D. A quarter of a meter long.
3. Does each kangaroo have a pocket?
A. Yes, it does.
B. No, it does.
C. No, it doesn't.
D. It doesn't tell us.
4. How long does a baby kangaroo stay in its mother's pocket?
A. one month
B. three months
C. six months
D. five months
5. How far can kangaroos jump?
A. More than 2 meters.
B. More than 9 meters.
C. Less than 2 meters.
D. Less than 9 meters.

举报
题目标签:袋鼠尾巴
参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【单选题】A.有的大袋鼠单独行动 B.大袋鼠常聚集在一起寻找水和食物 C.威胁大袋鼠最严重的是人们的捕捉 D.遇到干旱,袋鼠都会死亡

A.
大袋鼠是一种奇特的动物.它们平时在原野、灌木丛和森林地带活动,靠吃草为生.它们过群居生活,但没有固定的集群,常因寻找水源和食物而汇集成一个较大的群体。老鹰、蟒蛇和人们都要捕捉袋鼠,然而对袋鼠来说最大的危害莫过于干旱,幼小的袋鼠会死亡,母大袋鼠会停止孕育。
B.
下面说法正确的是()。

【单选题】真核生物mRNApoly尾巴的加接信号()。

A.
在转录终止点之前
B.
在转录终止点之后
C.
在转录终止点上
D.
在mRNA的5’端

【单选题】袋鼠仅仅分布在澳大利亚,这是因为()

A.
生物的进化不受环境选择的作用
B.
生物的进化其地理分布无关进行
C.
隔离的地区常进化产生特有的地区性物种
D.
生物的进化常常受环境影响而与地理因素的无关

【单选题】下列有关袋鼠的说法错误的是:()

A.
袋鼠的家族里有明显的等级制度。
B.
袋鼠在格斗时常会出现“以大欺小”的现象。
C.
袋鼠妈妈不喜欢格斗,却很喜欢观看雄袋鼠之间的格斗。

【单选题】袋鼠式护理的体位,不正确的是( )

A.
妈妈要能看见孩子的脸
B.
妈妈平躺
C.
母亲和孩子胸贴胸
D.
宝宝的头置于“闻花”位至少直立40°
E.
宝宝的颈部伸直,宝宝头转向另一侧