Mark the letter A, B, C or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.

Every year this charity organization takes on volunteers to support the needy and the poor.

A. dismisses

B. creates  

C. recruits    

D. interviews

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions.

Scientists have discovered the bones of what may be the largest meat-eating dinosaur ever to walk the earth. The discovery was made by a team of researchers from Argentina and North America in Patagonia, a desert on the eastern slopes of the Andes in South America. Besides the interesting fact that the dinosaur was huge and horrifying, it is even more astounding that the bones of a number of the dinosaurs were found together. This discovery challenges the prior theory that the biggest meat-eaters lived as loners and instead indicates that they may have lived and hunted in packs. The Tyrannosaurus Rex lived in North America and was believed to hunt and live alone.

The newly discovered meat-eater appears to be related to the Giganotosaurus family, being as closely related to it as a fox would be to a dog. It is actually not of the same family at all as the Tyrannosaurus Rex, being as different from it as a cat is from a dog.

The fossilized remains indicate that the animals lived about 100 million years ago. With needle-shaped noses and razor sharp teeth, they were larger than the Tyrannosaurus Rex, although their legs were slightly shorter, and their jaws were designed to be better able to dissect their prey quickly and precisely.

The word prey in the last sentence of the passage is closest in meaning to ____________.

A. enemy                       

B. victim              

C. dinosaurs                  

D. attacker

Buta-1,3-đien được dung nhiều nhất làm:

A. điều chế butan

B. điều chế buten

C. sản xuất cao su

D. sản xuất keo dán

Cho các dung dịch riêng biệt chứa các chất: anilin (1), metylamin (2), glyxin (3), axit glutamic (4), axit 2,6-điaminohexanoic (5), H2NCH2COONa (6). Số dung dịch làm quỳ tím hoá xanh là

A. 2

B. 3

C. 4

D. 5

It is a x 

A. polyester sleeping blue bag

B. blue sleeping polyester bag 

C.blue polyester sleeping bag

D. sleeping blue polyester bag

Một gen ở sinh vật nhân thực có 3900 liên kết hiđrô và có 900 nuclêôtit loại guanin. Mạch 1 của gen có số nuclêôtit loại ađênin chiếm 30% và số nuclêôtit loại guanin chiếm 10% tổng số nuclêôtit của mạch.

Có bao nhiêu kết luận sau đây đúng?

(1) Số nuclêôtit loại A ở mạch 1 là 450.

(2) Số nuclêôtit loại G ở mạch 2 là 750.

(3) Gen nhân đôi 2 lần, cần môi trường cung cấp 1800 nuclêôtit loại A.

(4) Tỉ lệ các loại nuclêôtit trên mạch 2 là A : T : G : X = 1 :3 :5 :1.

A. 1

B. 2

C. 3

D. 4