Scientists are working on the __________ of salt water into fresh water.

A . alert_ Certkiller .log B . alertlog_ Certkiller .log C . alert_log_ Certkiller .log D . Certkiller _alert_log.log E . log_alert_： Certkiller .log F . trace_alert_ Certkiller .log

A . By multiplexing the control files B . By multiplexing the redo log files C . By decreasing the size of redo log files D . By configuring mean time to recover （MTTR） to a lower value E . By setting the UNDO_RETENTION parameter to a higher value

A .  Flashback logs are not archived. B .  Flashback logs are maintained in redo log files. C .  Flashback logs are maintained in the Flash Recovery Area. D .  Flashback logs are used to maintain Flashback Database related errors. E .  Flashback logs need to be cleared manually after you disable Flashback Database.

A . Process B . Milestone C . Work D . Deliverables

A . By multiplexing the control files B . By multiplexing the redo log files C . By decreasing the size of redo log files D . By configuring mean time to recover （MTTR） to a lower value E . By setting the UNDO_RETENTION parameter to a higher value

A . This process assigns cost estimates to project activities including risks and contingency plans. B . The cost baseline will be used to measure variances and future project performance. C . This process assigns cost estimates for expected future period operating costs. D . The cost baseline is the expected cost for the project.

A . Whether working days B . Weather working days C . Running days D . Calendar day

A . Process B . Milestone C . Work D . Deliverables

A . Jacob's ladder B . Manropes C . Heaving lines D . All of the above

A .  To recover a dropped table. B .  To recover a dropped schema. C .  To recover data from a truncated table. D .  To view changes made by all the transactions during a given period of time. E .  To view changes made by a single transaction during a given period of time.

21. Now many animals can do some simple jobs that are done by human beings. 22. The writer says that 8t a circus we can see animals doing cIever tricks. 23. The trainer usually gives the animal a piece of candy or fruit after it has done the trick. 24. The reward in the passage means "attention paid to a good behavior". 25. Many animals may be trained to do simple jobs if they know who their trainers are. 26. Geese can be used to guard a house. 27. When the pigeon sees a ball which looks different from the others , it makes a noise. 28. Trainer usually spends 40 days or so training a pigeon to inspect sm811 steel balls. 29. An ape is a large monkey. 30. Scientists believe apes may drive buses one day.

W: Only two and a half. But it does seem longer. Q: What does the woman say about the report？ (18) A．It's the longest report she's ever written. B．She's only half way done with it. C．She'll finish it in two weeks. D．She has spent less time on it than the man thinks.

By this time, the World War II had ended in Europe. But the Japanese refused to surrender, the Americans decided that by dropping an atomic bomb on Japan, they could end the war quickly and save more of their soldier’s lives. Soon after midnight on 6 August 1945, a bomb was dropped on the city of Hiroshima, a civilian target. No warning was given and there was total devastation. Almost all the buildings were destroyed and more than 100000 people died or were horribly wounded. The Japanese military still did not want to surrender so three days later, the Americans dropped a second atomic bomb on the city of Nagasaki, killing 45000 people. The Japanese government was discussing ending the war when they heard the news of Nagasaki. Finally, they surrendered and the World War II came to an end. At first, the scientists who had built the bomb were pleased that it had helped to end the war. However, many would come to realize that they had helped to create the most terrible weapon known to man. The first atomic bomb ______. A．was less powerful B．was dropped in Nagasaki C．was a failure D．was tested in desert

对 错

A．Keep the public informed and especially to advise politicians and other influential persons. B．The scientists should make the technological assessment of foreseeable benefits and harmful effects. C．One thing scientists can and should do is to counteract the tendency of the news media to exaggererate and sensationalize new developments. D．A scientist should be responsible for presenting a？ true picture to the public about new developments in his own field,and for indicating possible implications so far as he can see them. 此题为多项选择题。

1.A.number B.group C.price D.deal 2.A.effect B.amount C.course D.program 3.A.increase B.increasing C.had increased D.is increasing 4.A.without B.improve C.producing D.strength 5.A.key B.a direction C.a solution D.service 6.A.cost B.method C.branch D.pound 7.A.Show B.pay C.save D.produce 8.A.property B.remedy C.welfare D.movements 9.A.So that B.which C.whose D.Of which 10.A.at B.for C.In D.from

是 否