下列关于子宫内膜结核病的描述，不正确的是（） A.妇女不孕的主要原因之一 B.较小或

It's really nice            you ______ me to work it out.[ ]

A. of; help

B. for; help

C. of; to help

D. for; to help

下面哪一项不属于旅行支票的特点（）

A、多种固定面额

B、多种币种

C、购买免费

D、票面设有防伪措施

About fifty years ago, plant physiologists set out to grow roots by themselves in solutions in laboratory flasks. The scientists found that the nutrition of isolated roots was quite simple. They required sugar and the usual minerals and vitamins. However, they did not require organic nitrogen compounds. These roots got along fine on mineral inorganic nitrogen. Roots are capable of making their own proteins and other organic compounds. These activities by roots require energy, of course. The process of respiration uses sugar to make the high energy compound ATP, which drives the biochemical reactions. Respiration also requires oxygen. Highly active roots require a good deal of oxygen.The study of isolated roots has provided an understanding of the relationship between shoots and roots in intact plants. The leaves of the shoots provide the roots with sugar and vitamins, and the roots provide the shoots with water and minerals. In addition, roots can provide the shoots with organic nitrogen compounds. This comes in handy for the growth of buds in the early spring when leaves are not yet functioning. Once leaves begin photosynthesizing, they produce protein, but only mature leaves can "export" protein to the rest of the plant in the form of amino acids.

Where is this passage likely to be found

A．A newsletter.

B．A magazine.

C．A storybook.

D．A novel.

建设项目选址规划管理能综合协调( )中的各种矛盾，促进建设项目的前期工作的进行。

A．规划设计

B．建设选址

C．建设用地

D．规划实施

辽海商贸公司准备设资开设一家新的连锁商店，拟从店址选择、需求大小、顾客流量、交通运输条件、投资额等方面进行市场调查。对市场需求和顾客流量采用自填式调查问卷收集所需的资料。
　　调查问卷设计是否科学完善，将直接影响调查资料的真实性、实用性，在很大程度上决定了整个市场调查的成败。所以，辽海商贸公司必须在市场调查之前，对问卷精心设计，反复推敲，以获得最佳的调查效果。

为了实现调查目的，提高调查效果，在设计调查问卷时，必须遵循的基本原则有( )。

A．目的性原则

B．可接受性原则

C．匹配性原则

D．非匹配性原则