内容正文:
Unit 3 Family matters
Grammar
夯实基础
Ⅰ.单句语法填空
1.The old man often (take) a walk after supper in the park with his pet dog following him.
2.—What did the teacher say just now?
—He said that the earth (move) around the sun.
3.Listen! Who (knock) at the front door?
4.Hurry up, Peter! The taxi (wait) for us at the gate of the hotel.
5.His first novel (receive) good reviews since it came out last month.
6.This is the first time I (come) to Chengdu and I am deeply impressed with its delicious food.
7.I often (study) late into the night when I was in Senior Three.
8.Sorry, Helen, I (not know) you were here.
9.—Mary has been in hospital for a week.
—Really? I (go) to see her this afternoon.
10. We are (meet) at the school gate at six in the morning.
Ⅱ.完成句子
1.除非我亲眼看到,否则我不会相信你的。
I unless I have seen it with my own eyes.
2.麦哲伦证实了地球是圆的。
Magellan proved that .
3.在过去的三年里我经历了很多事情。
I in the past three years.
4.今天早晨汤姆自己做饭,因为他的父母不在家。
This morning Tom because his parents weren't at home.
5.我不能帮助你做家务,因为我现在在做作业。
I can't help you with the housework because I ____________now.
能力提升
Ⅲ.阅读理解
Cells in our brain usually send a “stop eating” signal when we've had enough.But after mice ate fatty foods for just two weeks, their brains' brake on overeating quieted down.That finding may help explain the complex link between food and appetite that can become disordered when people overeat.
Food is essential to life.Our brains have, therefore, evolved a series of systems to make sure we eat enough.Garret Stuber, a neuroscientist at the University of Washington, together with his team took aim at one brain area known to be involved in eating behaviors.
This lateral hypothalamus (下丘脑外侧区) contains many diverse cells.Stuber's group looked at the behaviors of genes in the cells here.And in one type — glutamatergic nerve