Thực hiện phản ứng este hóa 23 gam C2 H5 OH với CH3 COOH dư, với hiệu suất phản ứng đạt 55%. Khối lượng CH3 COOC2 H5 tạo thành là bao nhiêu ?

122. The money___ in the last financial year can be reinvested onthe stock exchange.

A. saved​B. saving ​C. which saved​D. which saving

302. The Spring Hotel is very near the motorway, ………it is convenient for driver.

304. I have a big family and there’s always a lot of………to do.

A. homework​B. housework​C. houseworks​D. homeworks

306. While I’m away, a neighbor is ………my cat.

A. looking after​B. looking up ​C. looking for​D. looking at

308. It’s time ………our lesson to start.

A. for​B. with​C. in ​D. of

312. Many people become ________because of the natural disaster every year.

​A. homeland ​B. homesick C. homeless D. homework

Câu 1 . thì đừng tưởng tượng nữa

câu 2 vì con đười ươi có thói quen hay đập vào ngực nó cầm lấy con dao đập vào ngực nên nó chết

Câu 3 người lái xe bỏ xe đi qua cầu

Câu 5 Que diêm

Câu 6 phòng 3

Câu 7 4 con vịt

Câu 8 1 phát đập vào con ma xanh 1 con ma đỏ thấy thế tái mét mătj lăn ra chết và còn 1 phát đập vào con ma đỏ thứ 2 vậy là xong  

122. The money___ in the last financial year can be reinvested onthe stock exchange.

A. saved​B. saving ​C. which saved​D. which saving

287. We can save energy that means we can save our ……...

A. natural resources​ B. land ​C. water​D. air

288. We should use public buses ……… of motorbikes or cars.

​A insteadB because​C in spite​D change

293. This food is the best I………tasted.

A. had never​B. have ever​C. did​D. had

302. The Spring Hotel is very near the motorway, ………it is convenient for driver.

A. so​B. since ​C. work​D. although

304. I have a big family and there’s always a lot of………to do.

A. homework​B. housework​C. houseworks​D. homeworks

306. While I’m away, a neighbor is ………my cat.

A. looking after​B. looking up ​C. looking for​D. looking at

308. It’s time ………our lesson to start.

A. for​B. with​C. in ​D. of

312. Many people become ________because of the natural disaster every year.

​A. homeland ​B. homesick C. homeless D. homework

Vì 549 chia hết cho 3

   2009 ko chia hết cho 3

   720 chia hết cho 3

=> A ko chia hết cho 3.

Vì 549 chia hết cho 9

    2009 ko chia hết cho 9

    720 chia hết cho 9

=> A ko chia hết cho 9       

22. We are looking for the .......of recreation in the park.

A. place​B. area​C. region​D. point

35. He fell off the tree and ……………………

36. When did ………………. talk to him?

49.​She is the girl ………………..eyes are beautiful.

​A. her​B. whom C. whose​ D. those

55. Thanks ………the money he received, he was able to attend the university.

A. in​B. on​ C. for​D.to

56. This room is too dark. It needs ………

A. to repaint​B. to repainted​C repainting​D. repainted

57. They went on playing……… it started to rain.

​A. Although​B. However​C. Because ​D. Therefore

59. Nobody does it ………Jackson.

A. most best than​B. as well than ​C. more better as​D. better than

60. The house is small for us to live in. We wish it ……….

A. were smaller​B. weren’t​C. were bigger​D. weren’t bigger

67.When .........................................? In 1876.

A. the telephone was invented ​B. was the telephone invented

C. did the telephone invented ​D .did the telephone invent