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问题 单项选择题


ABCDE是备选答案，下面两问是两道考题，如这道题只与答案A有关则选A；如只与答案B有关则选B；余此类推。每个答案可以选一次或一次以上，也可一次不选。

A．宣肺化痰 B．理气健脾
C．温肝散寒D．疏肝理气
E．消食健胃

青皮的主要功效是：

答案

参考答案：D

填空题

设α1，α2，α3是非齐次线性方程绀Ax=b的解，α=α1+aα2-3α3，则α是Ax=b的解的充分必要条件为a=______，α是齐次线性方程组Ax=0的解的充分必要条件为a=______．
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单项选择题

Lobbying groups often try to disguise a financial self-interest by clumsily dressing up their arguments in the guise of concern for the public. You see this tendency in the pharmaceutical industry (21) in energy and lumber companies who like to tout their (22) of the environment. But (23) , two new books argue, are these tactics more (24) a cause for concern than in agribusiness.
Marion Nestle’s "Food Safety: Bacteria, Biotechnology, and Bio-terrorism’ looks at the way the American meat and biotechnology industries have (25) successfully on Capitol Hill (26) stricter federal regulation, which the author argues has undermined the safety of the food supply.
(27) , Maxime Schwartz’s "How the Cows Turned Mad" (28) the origins of mad-cow disease over more than two centuries, and reveals the fallout from the British government’s blind (29) that the disease could not be (30) to humans.
In 1999, Ms Nestle writes in her earlier book, Rosemary Mueklow, the executive director of the National Meat Association, lobbied against President Clinton’s (31) to establish a more thorough testing regime for E. coli 0157: H7, a potentially (32) pathogen.
Ms Muck low’s organization—which represents meatpackers and processors who (33) to discard or reprocess meat found to be infected under the new testing regime—argued on Capitol Hill that (34) microbial testing in meat could actually lead to a greater public health risk (35) confident consumers might relax their own safe-handling procedures at home.

A. anywhere B. nowhere C. somewhereD. elsewhere
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