更多"How long had the researchers been l"的相关试题:
[单项选择]How long had it been since the war ended when Homer wrote about the Trojan War7（ ）.
A. About 2,000 years.
B. Less than 2,700 years.
C. More than 500 years.
D. Almost 3,200 years.
[单项选择]How long had the woman had the toothache
A. Since last year.
B. For several weeks.
C. For a few days.
[单项选择]
Conversation 2
How long had Kathy been away from home（）
A. A whole day.
B. The whole afternoon.
C. The whole morning.
D. A whole night.
[单项选择]
How long had the man been waiting for her
[单项选择]For how long had Mr. Smith been taking money
A. 2 years
B. 12 years
C. 5 years
D. 8 years
[单项选择]How long had it been bothering the patient（ ）.
A. For a long time.
B. About 2 days.
C. More than one week.
[填空题]
How long had business-centered electronic commerce developed
[填空题]How long has acupuncture been practiced ______6
What are doctors in the United States doing with acupuncture ______7
How many needles are used during an Operation to keep the patient from feeling pain ______8
Where were two needles inserted ______9
How did the patient feel throughout the operation ______10
[单项选择]
How long has Barbara been waiting
A. Fifty minutes.
B. Fifteen minutes.
C. Forty-five minutes.
D. Thirty minutes.
[单项选择]How long has the magazine been on saleHow long has the magazine been on sale
A. for one year
B. for eighteen months
C. for two years
[单项选择]How long has Lily been learning English
