Chủ đề:
Chương I. Các loại hợp chất vô cơCâu hỏi:
Hòa tan hết m(g) Fe vào dd HCl 2M sau p/ư thu đc 6,72(l)khí H2 (đktc)
a.Tính m
b.Tính thể tích HCl đã dùng
c.Tính nồng độ mol của dd thu đc sau p/ư
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127
Số lượng câu trả lời
10
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Chủ đề:
Luyện tập tổng hợpCâu hỏi:
What can we do (live/to live/living).......... a healthy life? In our society, people spend more and more time................... (work/ to work/working). So we often don't bother (prepare/to prepare/preparing).................... healthy meals. In order (save/to save/saving)............. time, we tend buyto buybuying fast food. At fast food restaurants, we can (eat/to eat/eating).................... quite a lot without (have/to have/having)............. (pay/to pay/paying)................. a fortune. And children enjoy( eat/to eat/eating)............... chips and burgers and (drink/to drink/drinking)................ lemonade and cola. That's a problem because eating habits are hard (shake/to shake/shaking).................. The high amount of carbonhydrates in fast food and sugary drinks is blamed for (destabilise/to destabilise/destabilising)................... the body's regulation of appetite. So we keep on (want/to want/wanting)............. eatto eateating more. Bad eating habits result in people (become/to become/becoming).................. obese. Obese people risk (suffer/to suffer/suffering)..................... from heart diseases. We can avoidto avoidavoiding( risk/to risk/risking)............... such diseases by (choose/to choose/choosing).............. (eat/to eat/eating).............. healthy food. Be careful though. Some people are convinced (do/to do/doing)........... something for their health by (live/to live/living)................. on energy bars or cornflakes. And this is what the advertising for these products wants (make/to make/making)................ us (think/to think/thinking)............. In reality, however, these foods are often heavily sugared (give/to give/giving)................. them flavour. But sugar is not mentioned as clearly as the low fat - that's why experts warn against (rely/to rely/relying).............. on the ads. To live a healthy life, we ought (choose/to choose/choosing)..................... our food wisely. We should (eat/to eat/eating)................ regular meals and (try/to try/trying)............. (find/to find/finding)............. ways of (exercise/to exercise/exercising)................... more.
Chủ đề:
Luyện tập tổng hợpCâu hỏi:
Exercise I. Use the suggestions to write complete sentences
1/ Lan / enjoy / listen / music.
2/ My brother/be/ interested / find / new job.
3/His father /be/ tired / work / his factory.
4/ Her father / give up / drink coffee / last month.
5/ your sister / fond / go swimming ? 6/ they /be/ bored / talk / their neighbour.
7/ I / begin / learn / English / last year.
8/ They / stop / argue / when / I / arrive.
9/ The workers / start / widen / road / 1999.
10/ I can't stand / stay / home all day.