问题 单项选择题

恰好有七名研究人员——三名人类学家(F、J和M)和四名语言学家(N、O、R和S)将要参加两个三人小组——1号小组和2号小组。每个研究人员只能参加一个小组。每个小组中必须至少有一名A(人类学家)和一名L(语言学家)。小组人员的组成必须遵循以下条件:(1)F和S不能同组;(2)N和R不能同组;(3)M不能与S和R同组;(4)J在第一组时,R在第二组。

下面除了哪两个研究人员之外都可以在第二小组

A.F和J

B.F和M

C.F和R

D.J和M

答案

参考答案:B

解析:由上一小题可知,J可以在2号小组,因此A、D排除;R显然也可以在2号小组,故C也排除;综上,选B 模拟试卷十一参考答案:与解析

阅读理解

阅读理解。

     Australia has lots of lovely animals. You can't find them anywhere else in the world. The most famous

ones are kangaroos and koalas. The kangaroo is the symbol of Australia. They have large eyes and ears.

They don't walk, they jump. They use their strong back legs. They can jump at 74 kilometers per hour.

They can go over nine meters in one jump.

     Kangaroo mothers have pouches to carry their babies. The babies stay inside to get milk and keep warm.

Kangaroos are everywhere in Australia. They are on TV, in books and in the shops. But do you know that

millions of kangaroos are killed every year? There are too many of them. There are about 20 to 25 million

kangaroos in Australia. That's more than the number of people in the country. Some kangaroos go hungry

because there is not enough food to eat. They break into farms for food. Farmers are angry with them.

     The koalas is another famous Australian animal. They look like bears, have small eyes and big noses.

They eat leaves from gum trees. Koalas have a special smell. They use it to mark their home-"This is my

place, you can't come in." Like kangaroos a koalas baby lives in its mother's pouch,too.

1. If we want to see kangaroos and koalas in natural forests, we can go to           . [ ]

A. China

B. France

C. Australia

2. What does a kangaroo look like? [ ] 

A. It looks like a bear

B. It has big eyes and ears

C. It has small eyes and big noses

3. The word "pouch" means           .[ ]

A. 育儿袋

B. 肌肉

C. 尾巴

4. Which is not true? [ ]

A.The kangaroos can go over nine meters in one jump

B. Koalas like eating leaves from gum trees

C. Koalas use their voices to mark their homes

5. What's the best title of this passage? [ ]

A. kangaroos and koalas

B. Beautiful Australia

C. How to protect kangaroos and koalas

单项选择题