①【2012陕西】The workers in the Huashan Mountains have to ______ rubbish to keep the mountains clean.

A. turn up B. pick up C. mix up D. give up

②【2013湖北武汉1】 It seems that the aged people ____ the H7N9 more easily from the recent case.

A. pick up B. mix up C. set up D. use up

5.noise n 噪音;声音，声响； → noisy adj. 吵闹的→noisily adv 吵闹地

make noise 制造噪音 strange noises 奇怪的声音

【拓展】noise, voice与sound辨析：

(1) noise意为"噪声；声响"，指不悦耳的声音等。

(2) voice意为"声音"，多指人的说话声、歌声和笑声等。

(3) sound可以指听到的自然界的一切声音。

活学即练：

① 【广西崇州】The children often get _________(noise) in the classroom after class.

②( )-Did you hear any strange________when the quake happened? -No, I was in my garden with my flowers and was enjoying the beautiful________ of my birds at that time.

A． voice; noise B．noise; sound C．whisper; sound D．sound; voice

6.see/hear sb. doing sth. 看见/听见某人正在做某事（ 强调动作正在发生）

see/hear sb. do sth. 看见/听见某人做某事 （强调发生的整个过程）

hear of/about 听说 hear from =receive a letter from sb. 收到某人的来信 I'm sorry to hear that.听到这件事我很难过(指听到别人不幸的消息时的用语)

活学即练：

( ) When the little boy _____ someone coming upstairs, he stopped ____.

A. heard; to cry B .listened; crying C. heard; crying D .listened; to cry

7.wolf n. 狼

Are there any ___________( wolf) in the mountains? 山里有狼吗？

【拓展】 以f (e) 结尾的名词，其复数形式改f (e) 为______再加______。

下面的顺口溜可以帮助记忆：

妻子持刀去宰狼，小偷吓得发了慌；躲在架后保己命，半片树叶遮目光。

顺口溜中的名词：wife(妻子)，knife(小刀)，wolf(狼)， thief(小偷)，shelf(架子)， self(自己)， life(生命)， half(一半)，leaf(树叶)。

8.sleepy adj. 困倦的；瞌睡的

【解析】 sleep (slept; slept) v"睡觉" → sleepy adj. "困倦的；疲惫的" sleepy "困倦的"可做表语和定语 feel sleepy 感到疲倦 sleeping "正在睡觉的"可做定语和表语 the sleeping baby 熟睡的婴儿 asleep "睡着的", 只做表语 fall asleep 入睡

活学即练11：

① If you stay up too late, you will feel _______(sleep) in class the next day.

②keep quiet, kids, Dad ____________(sleep) in the next room.

③【2013•泰州】 David fell__________(sleep) in class because he stayed up too late last night.

9.suit v 适合，符合 → suitable adj. 适合的 n. "一套衣服;一套西装"

(1) be suitable for 适合于