【解释】

diet 指通常吃的食物，尤指规定的食谱[如治疗疾病或减轻体重的食物]，还可作动词"节食"。常用搭配：be/get/go on a diet 进行节食 put sb. on a diet限制某人的饮食

food 指人或动物所需的食物；或植物所需的养料。 【练习】根据句子意思用diet，food的适当形式填空。

1). We cannot survive without _______ and drink.

2). The doctor says I' ve got to go on a _______.

3). The doctor put me on a low-salt _______ to reduce my blood pressure.

Keys: 1). food 2). diet 3). diet 2. offer / provide / supply 【解释】

offer"提出，提供，呈现"，表示向别人提供帮助，服务或物品。

搭配：offer to do sth / offer sb sth /offer sth to sb

provide"供给，提供，装备，准备"，强调有预见，并通过储存或准备的方式为某事做准备，以在需要时提供所需物品。搭配：provide sb with sth / provide sth for sb

supply"供给，补充，弥补"，表示替换或不足所需之物以及弥补缺陷，满足要求的意思；也作名词，"供给(量)，物资，存货"。搭配：supply sb with sth / supply sth for/to sb 【练习】根据句子意思填介词或用offer，provide，supply的适当形式填空。

1). The project is designed to _______ young people _______work.

2). He _______ to lend me some books.

3). He _______ me 300 dollars _______ that television.

4). We ______ power to the three nearby towns.

Keys: 1). provide; with 2). offered 3). offered; for 4). supply 3. strength / power / force 【解释】

strength 用于身体指力气力量；用于物体指承受或抗拉的强度；也可指长处。

power用于人体、机械或风时指可应用的能量，也可指电力、权力和能力。

force用于爆炸、风暴或打击时指释放的能量及其对物体的冲击力；也可指暴力。 【练习】根据句子意思用strength，power，force的适当形式填空。

1). I will do everything in my _______ to help you.

2). We can use the _______ of the wind to make electricity.

3). He used all his _______ to lifted the heavy box.

4). The soldiers took the prisoners away by _______.

Keys: 1). power 2). power 3). strength 4). force 　4. glare / stare / glance 【解释】

glare at sb. 对某人怒视，怒目而视

stare at sb. (由于惊奇、害怕、生气或深思而睁大眼睛) 对某人凝视，盯着看

glance at sb. 对某人瞥一眼，粗略地看，浏览 【练习】根据句子意思用glare，stare，glance的适当形式填空。

1). She _______ shyly at him and then lowered her eyes.

2). The two boys _______ at each other before they fought.

3). My father_______ at the stranger for a long time as if they had known each other before.

Keys: 1). glanced 2). glared 3). stared