Mark the letter A, B, C or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions
The advances of commercial airplanes resulted in a shrinking world.
A.reduced
B.smaller
C.compressing
D.decreasing

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
 
I don’t choose this flat because it seems to have so much _____________, which is so bad for my health.
A.mould and mildew
B.asthma
C.mushroom
D.sunlight

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
 
Nowadays, people are searching for more ____________________materials to build their houses.
A.environmentally-friendly
B.environmental-friendly
C.environments-friendly
D.environmental-friend

Cho hình chóp $ S.ABCD $ có đáy là hình vuông. $ SA $ vuông góc với đáy. Góc giữa đường thẳng $ SC $ và mặt phẳng $ \left( ABCD \right) $ là
A.$ \widehat{ASC} $ .
B.$ \widehat{CAS} $ .
C.$ \widehat{SCB} $ .
D.$ \widehat{SCA} $ .

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
 
It is recommended that we clean our house at least once a week to remove dirt and keep airflow ______________ in our house clear.
A.pathways
B.chemicals
C.products
D.journeys

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
A good leader in globalization is not to impose but ______________ change.
A.cause
B.show
C.oppose
D.facilitate

Chọn đáp án đúng
Điền chữ số thích hợp vào chỗ chấm
$ 3500c{{m}^{2}}=...d{{m}^{2}} $
A. $ 305 $ .
B. $ 35 $ .
C. $ 350 $ .
D. $ 3050 $ .

Điền số thích hợp vào ô trống:
 
 
2019dm$^2$ =   $cm^2$
A.201900
B.
C.
D.

So sánh:
 
 
320cm$^2$   3dm$^2$20cm$^2$
A.=
B.
C.
D.

Đọc $ 8031d{{m}^{2}} $ là
A.Tám trăm ba mơi mốt đề-xi-mét vuông.
B.Tám trăm linh ba mốt đề-xi-mét vuông.
C.Tám nghìn ba mươi mốt đề-xi-mét vuông.
D.Tám nghìn không trăm ba mươi mốt đề-xi-mét vuông.