课时作业40
Unit 5 Meeting your ancestors
Ⅰ.单项填空
1．(2013·山西省诊断)John has got a fever these days and he said he didn't want to see a doctor, but I'm afraid he has no ________.
A．extra B．treatment
C．possibility D．alternative
解析：alternative 选择。extra 额外；treatment 治疗，对待；possibility 可能。句意：约翰这些天发烧，他说他不想去看医生，但我认为他别无选择。
答案：D
2．The club accepts everyone who wants to join ________ their age and sex.
A．because of B．regardless of
C．in case of D．in place of
解析：句意：这个俱乐部接纳每一个想加入的人，不管他们的年龄和性别。regardless of“不管，不顾”，符合句意。because of 因为，由于；in case of 假设，万一；in place of 代替。
答案：B
3．From what he has said, let's make a ________ guess about how the accident happe ned.
A．clear B．sure
C．certain D．tentative
解析：形容词词义辨析。clear 清晰的，明白的；sure/certain 肯定的；tentative 试探性的。make a tentative guess 猜想一下。
答案：D
4．This new discovery of oil is of great ________ to this area's economy.
A．significance B．accuracy
C．satisfaction D．assumption
解析：be of significance to sb./sth.相当于 be very significant to sb./sth.对某人/某物有深远意义。句意：这次新发现的石油对这个地区的经济有着重大的意义。
答案：A
5．Living in a ________ way of life, the man looks happier than a modern one.
A．sensitive B．primitive
C．negative D．alternative
