It was said that, after （kill)_________,Mr Smith was thrown away into river.

The man said he would hit me______ I told him where my money was.

A．until

B．unless

C．soon after

D．as

听力原文： West Aft'lean leaders say they are cautiously in favor of using genetically modified crops. But non-governmental organizations are calling for a five-year moratorium so more research can be done. The issue is being discussed at a U. S. -sponsored conference in Burkina Faso.

During the three-day conference, which started Monday, West African leaders said they want assurances that genetically modified products are safe for the people who eat or use them, and for the environment. (7) But the leaders say that in general they believe the genetically modified crops will lead to higher agricultural productivity and therefore should be used.

But non-governmental organizations in West Africa remain unconvinced. A protest by non-governmental organization is planned for Wednesday, when the conference ends.

West African leaders who want assurances believe the genetically modified crops will lead to

A．higher financial earnings.

B．more genetically modified crops.

C．higher agricultural productivity.

D．more genetically modified products.

endent review board said they believe a chemical used in making it poses more of a cancer risk than previously indicated.

But DuPont, the US-based chemical giant that manufactures Teflon, denied exposure to PFO, an acid, which could pose a health risk to the public.

The findings have not resulted in any substantial impact on the company, a DuPont China Beijing office official, said on Friday.

China's product quality watchdog said on Friday that it knows about the incident and has not yet decided whether to test the safety of the non-stick surface for the second time in less than a year. In a &aft report released earlier this week, an advisory board that reviewed the US Environmental Protection Agency's report concluded that PFOA is "likely" to be carcinogenic to humans. The draft was based on tests conducted on animals, and the advisory board mended the US EPA conduct further testing

But a statement released by DuPont on Tuesday said that the company is conducting an employee health study on PFOA and that partial results indicate no association between PFOA exposure and most of the health parameters that were measured. According to Xu Yang, a public relations official with DuPont's Beijing office, about 5 percent of Chinese families use non-stick flying pans compared with 95 percent in the United States.

Last year, the US EPA said it would fine DuPont for failing to report test results regarding PFOA, but the investigation is under way.

China's General Administration of Quality Supervision, Inspection and Quarantine ordered a probe last October, but it detected no PFOA in Teflon cookware.

"Landed in the spotlight" (Line 1, Para 1) can be best replaced by______.

A．Entered the market

B．Retreated from the market

C．Become the focus of attention

D．Been prohibited from sales

A.forward

B.aft

C.stern

D.fore

he trim，you may ______．

A.Add ballast aft

B.Load more cargo aft

C.Shift cargo aft

D.All of the above

A．Single up forward to head line and spring

B．Single up aft to stern line and spring

C．Single up aft to head line and spring

D．Single up aft to breast line and spring