The first sign of vitamin A disorder is night __________.
A. loss of sight
B. lack of vision
C. invisibility
D. blindness
Đáp án: D
Giải thích: night blindness: bệnh quáng gà
Dịch: Dấu hiệu đầu tiên của rối loạn vitamin A là quáng gà
Miss White ________ her parents is going to pay a visit to the Great Wall.
She hasn't paid as much attention to her children as she ______ since she _______ working.
Which is good for such an old lady like her is that she is healthy enough to cycle.
I supposed, as ______ we all, that the meeting would be cancelled.
Unfortunately, the solution to this problem is neither simple nor ______.
We should keep our freezer full ______ it runs more efficiently than an empty one.
It is the underserved ________ that damaged his life and his family.
Her business must be going rather well, _______ by the car she drives.
..... as taste is really a composite sense made up of both taste and smell.
I was kept awake for most of the night by the _______ of a mosquito in my ear.