根据短文内容，从短文后的选项中选出适当的选项补全短文，并将选项的编号字母依次填入题号后横线上。
    A recent survey has shown that China is considered to be (he most indusuious nation in the world,____ .
    The survey 一with more than 8,000 people surveyed from Canada. France, Germany, India, Netherlands, the UK and the US—ranks their 'industriousness(勤奋度),which describes (he level to which a country is “hard—working, creative in producing new ideas or products”.
According to the international survey,____ , followed by workers from Germany and the US. Employees from a France are considered 10 be the laziest people in the world. German employees replied confidently to the survey, placing themselves first in the order of global industriousness French employees, on the other hand, seem to know (heir limitations (能力局限)____ .
A Germany newspaper reported that Chinese employees work on average 44.6 hours per work, ____ .
____ , Chinese employees have only ten days of paid leave on average, while German employees have twenty—five days. Industriousness Ranking: China, Germany, the US, Canada, India, the UK, Netherland, France.

A．emplyees from China get second place in the list

B．Although China has more public holidays than Germany

C．and many of those surveyed placed France in the last place

D．Chinese employees are the most industrious people in the world

E.while German employees average about 33.5hours of work per week
F.according to the research from Monster Worldwide and GFK,a German global market research institute.

核酸是细胞内重要的化合物，请回答下列有关核酸的问题：

（1）核酸的基本组成单位是____ ，请写出图中字母M、N、Q所表示的物质名称：M、____ N、____ Q、____ ．

（2）核酸种类的不同是由于上图中N的不同，N有____ 种．组成DNA的N为____ ．

（3）上图中的Q共有____ 种．组成DNA的Q是____ ．

（4）由细胞组成的生物体遗传物质是____ ，病毒的遗传物质是____ ．

下列实验操作中，不正确的是（   ）

依次填入下面一段文字横线处的语句，衔接最恰当的一组是（3分）（   ） 共0条评论...
究竟什么是年呢？最常引起我们回头看的，是当我们走到一个路上的界石的时候。说界石，实在没有什么石。只不过在我们心上有那么一点痕。但倘若说了出来的话，就是年。就从最近的界石看回去罢。先看到             。再往前，又看到           。再往前，          。          。更往前，           。中间点缀着亮的白天，暗的黑夜。在白天里，我们拼命填满了肚皮。在黑夜里，我们挺在床上裂开大嘴打呼。
1烈阳闪着金光。w.w.^w.k.&s.5*u.c.#om高.考.资.源.网
2到处闪动着火焰般的花的红影。
3澄碧的长天下流泛着的萧瑟冷寂的黄雾。
4苍郁欲滴的浓碧铺在雨后的林里，铺在山头。
5白皑皑的雪凝结在杈桠着刺着灰的天空的树枝上。

    Not long ago, the only time you could see a robot was when you were reading a novel or watching a movie such as Star Wars (星球大战) . Today, however, a lot of things in science stories have been science facts. Robots are starting to appear in our everyday lives. These robots have different sizes, shapes, and colors. But they all have the same type of man-made “brain”. Leading the robot revolution （革命）are industrial(企业) robots that work in factories. Industrial（工业） robots can do different kinds of jobs that are often boring and sometimes dangerous. Robots are also coming to American homes, though not as quickly as they are entering factories. These robots aren’t as friendly and bright as those you saw in  Star Wars. But, their makers say, today's home robots “walk”, sense objects(感知物体) in their way (and sometimes knock into them), and even carry objects (which they sometimes drop). Well, nobody is perfect.
    We may laugh at home robot today, but some day they may see and hear better than humans do. We humans can only see certain wavelengths（波长） of light, and hear certain sounds. That’s because the abilities of our eyes and ears are limited. Robots, however, need not have the same limits as we have. Robot may also be equipped with devices that pick up information humans can't. To understand what their sensing devices(传感器) pick up is a hard job. Remember, man—made brains handle(处理)information, including all kinds of data, as zeroes and ones. Imagine the difficulty in trying to explain to a robot what a football looks like—using only zeroes and ones.