Which of the following options uses the present perfect question form?
Are you going to Germany this year?
B. Do you visit Germany regularly?
C. How long have you been living in Germany?
D. Have you ever been to Germany?
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Which of the following options uses the present continuous negative form?
A. You don’t look very happy.
B. You haven’t looked so beautiful in years.
C. You are looking tired.
D. You aren’t looking very well.
Which of the following sentences does NOT use a present tense?
A. I will see you in the morning.
B. Unemployment is rising.
C. I play tennis every Friday morning.
D. She has never been married.
最常见的白内障类型为（）
A. 年龄相关性白内障
B. 并发性白内障
C. 先天性白内障
D. 后发性白内障
年龄相关性白内障分型最常见的是（）
A. 皮质性
B. 核型
C. 囊下性
D. 先天性
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