【推荐1】About ten men in every hundred suffer from color blindness in some way. W    1     are luckier. Only about one in two hundred is affected in this matter. Perhaps, after all, it’s s    2     to be driven by a lady.

There are different forms of color blindness. In some cases, a man cannot see deep red. He may think that red, orange and yellow are all shades of green. In rare cases, an unlucky man may see e    3     in shades of green.

Color blindness in human beings is a strange thing to e    4    . In a single eye, there are millions of very s    5     things called “cones（视锥细胞）”. These help us to see in a bright light and to tell the difference between colors. There are also millions of rods（视杆细胞）but these are used for seeing when it is n    6     dark. They show us shape but no color.

Some insects have favorite colors. Mosquitoes like blue but do not like yellow. A red light will not attract insects, but a blue lamp will. In a similar way, human beings also have favorite colors. Yet we are lucky. With the help of the cones in our eyes, we can see many beautiful colors by day, a    7     with the help of the rods, we can see shapes at night. One day we may even learn more about invisible colors around.

Handwriting has    1     (become) a dying art. Now children start using keyboards as   soon as they begin school. But writing things by hand may be an     2     /ɪmˈpɔːtnt/ way for us to train our brains.

Writing by hand is different from typing. Typing means choosing the whole letter by     3    (touch) a key.    4    , if we write by hand, we should use strokes (笔画) to make a letter. These finger actions make the large parts of the brain to work, to think and to remember     5     (language). Handwriting helps children learn letters and shapes, and it also improves their abilities to express ideas.

In grades    6     /tu:/, four and six, children write more and    7     (fast), and express more ideas when they are writing compositions by hand than typing on a keyboard.

The children who     8     /'præktis/ writing by hand have more active brains than the children who just look at letters.

Writing things by hand is     9     for both the children and the adults. When adults learn a new language, they can remember     10     (it) characters better if they write them out by hand. It’s time for us to write by hand instead of typing all the time!

Everyone knows that second-hand smoke is as dangerous as first-hand smoke. But have you   h    1     of "third-hand" smoke?

Third-hand smoke means the pollution left on the surfaces (表面) of things around, l    2     furniture or clothes. When someone smokes in a room, poisonous particles(粒子) in tobacco (烟草) smoke land on the surfaces of the furniture or his clothes, even after the cigarette (香烟) has been put out. This can cause a great danger to your family, e    3    younger children.

Babies have only just learned to walk. They are more likely to be harmed by third-hand smoke. This is b    4     they are often close to surfaces of things. such as floors, walls and furniture where tobacco particles remain. When they   t    5     these surfaces, they get their hands polluted.

So, it is necessary and important to say   n    6     to third-hand smoke. To achieve this, strict   r    7     for forbidding (禁止) smoking inside homes should be carried out. If one of your family members smokes, please make sure he smokes   o    8     the house. Get him a special jacket and hat, so once he   f    9     smoking, he will take them off before getting inside the house. Moreover, make sure that a smoker washes his hands and face, and changes his clothes before picking up the baby.

Many times, you cannot see the smoke doing harm to your child, but it doesn't mean he or she is s    10    ". Give up smoking, or if that is not possible, make sure that your loved ones, far away from third-hand smoke.

【推荐1】The third long March-5 rocket, China’s largest carrier rocket was     1    (success) launched(发射) from Wenchang Space Launch Center in Hainan Province on Dec. 27, 2019. The rocket     2    (name) Long March-5 Y3. It left the ground from the launch center at 8:45 p.m., carrying the Shijian-20 satellite, the     3    (heavy) and most modern communications satellite of China. About 2,220 seconds later, the satellite was sent into its     4    (plan) orbit(轨道).

The Long March-5 rocket made its first flight on Nov. 3, 2016 from Wenchang. However, the     5    (two) largest rocket, Long March-5 Y2, experienced a failure on July 2, 2017.     6    (compare) with Long March-5 Y2, the new rocket Long March-5 Y3 has shown more than 200 technological improvements.

Qu Yiguang, director of the Long March-5 Y3 research team, said, “Under great pressure, the research team has put all the efforts into the rocket over the past two years. We are very     7    (pride) that we can take part in the development of the Long March-5 rocket, which shows the highest level of China’s rocket technology.” After over two years of     8    (silent) in Wenchang, the Chinese welcomed the return of the “king” with excitement.

Since the Long March-1 sent China’s first satellite into space 50 years ago, the Long March series rockets     9    (complete) 323 flights. Over the past years, China’s rocket technology has been greatly improved. With the success of the Long March-5 Y3 rocket, China     10    (see) a busy year in space activities next year.

Robots were invented to service human beings. They do some dull and d    1     work instead of humans. Because robots will never get b    2     and they are not afraid of danger. For example，a few years later，robots will go to a war，no m    3     human. It can even be designed as an advanced（先进的）killing weapon. A    4     there are a great part of the work will be replaced by a robot，what a robot does is only running its master's p    5     .

Robots are s    6     with human beings，but just in appearance. They may have similar s    7     ，but they are quite different in nature. Because robots can not t    8     and they have no emotion（情感）.Think about you are a doctor，you can think how to cure，use which kind of m    9     .What a robot does is just some rigid tips，So they will never take the place of human d    10     .