[C or U] the force that a liquid or gas produces when it presses against an area:

gas/water pressure

The new material allows the company to make gas pipes which withstand higher pressures.

The gas is stored under pressure (= in a container which keeps it at a higher pressure than it would usually have).

高考链接:

(03上海)

Life is tough in the city. In order to lose their , some people drink alcohol.

A．temper B．mood C．consciousness D．pressures

答案及解析： D. lose one's pressure 解除压力 4. On top of this, according to the United Nations, hunger and malnutrition claim ten million lives every year.(P2)

on top of

adv. in addition to something, especially something unpleasant: 另外

We missed the train, and on top of that we had to wait for two hours for the next one.

高考链接:

1.（06 全国II）

. See the flags on top of the building? That was______ we did this morning.

　A. when B. which C. where D. What

2. (06上海)

Put the ___ of your tongue against your upper teeth when you pronounce the sound.

　A. tip B. top C. peak D. pole

答案及解析：1. C. on (the) top of the building 在大楼顶上

2. A. tip顶端，尖端 the tip of the tongue 舌尖 5. It is without doubt an amazing achievement, but is it enough?(P2)

without doubt

adv. used to emphasize your opinion: 毫无疑问地

She is without (a) doubt the best student I have ever taught.

高考链接:

(06 广东)

Some researchers believe that there is no doubt _______ a cure for AIDS will be found.

A. which B. that C. what D. whether

答案及解析： B. There's no doubt that...毫无疑问 6. They need help, but the sad truth is that food aid alone is not enough to help these countries .(P2) 它们需要帮助，但不幸的事实是仅有食物援助对帮助这些国家是不够的。

alone

adjective [after noun] only or without any others: 仅有,仅凭

She alone must decide what to do (= no one else can do it for her).

These facts alone (= even if nothing else is considered) show that he's not to be trusted.

He won't get the job through charm alone (= he will need something else).

The airfare alone would use up all my money, never mind the hotel bills.

Price alone is not a reliable indicator of quality. He alone knows the secret.

只有他一人知道秘密。