单项选择题

What has possibly led to the sinking of the ship according to the news().

A. Mechanical problems.
B. Attacks from North Korea.
C. A mine explosion.
D. Bad weather condition.

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单项选择题

New figures published by the World Health Organization show () of all donated blood isn’t tested.

A. 15%
B. 20%
C. 25%
D. 30%

单项选择题

What is the key to controlling the disease().

A. Providing them with qualified doctors.
B. Keeping people away from sick people.
C. Keeping people away from sick chickens.
D. Providing them with sufficient medicines.

What has possibly led to the sinking of the ship according to the news(). 您的浏览器不支持 audio 元素。

What has possibly led to the sinking of the ship according to the news().