2026年练习部分八年级英语上册沪教版五四制第3页答案
🎧 3 Listen to a conversation between Peter and Jane. 听彼得和简的一段对话。
🎧 3-1 Listen and complete each statement about water with a number. 听对话，补全关于水的陈述。每空格填一个数字。
(1) Water expands (膨胀) by about
9%
when it becomes ice.
(2) Water makes up about
0.02%
of the Earth’s weight.
(3) Water leaves your stomach about
5
minutes after you drink it.
(4) Almost
$\frac{1}{3}$
of human bones is water.

答案

(1) 9% (2) 0.02% (3) 5 (4) $\frac{1}{3}$
🎧 3-2 Listen again and answer the questions. 再听一遍对话，回答问题。
(1) What are the two speakers doing?
They are playing a game/talking about water.

(2) How many correct guesses has Jane had?
Four.

(3) In what form is the water found on Mars?
Frozen./Ice.

答案

(1) They are playing a game/talking about water.
(2) Four.
(3) Frozen./Ice.
4 Listen to a report and fill in each blank with a number. 听报道，完成填空。每空格填一个数字。
(1) In England (英格兰), tap water passed
99.97%
of daily tests in 2023.
(2) In blind (盲的) tests, only
$\frac{1}{10}$
of people can tell the difference between bottled water and tap water.
(3) Making one litre of bottled water needs up to
4
litres of water. And making one plastic bottle needs
17
to
35
litres.
(4) A half-litre plastic bottle produces
82.8
$ grams of CO_2, like driving a car $
0.3
kilometres.
(5) Less than
10%
of plastic bottles are recycled. The rest pollute the environment for hundreds of years.

答案

(1) 99.97% (2) $\frac{1}{10}$ (3) 4; 17; 35 (4) 82.8; 0.3 (5) 10%