When you think of a fearsome hunter, images of lions and sharks may spring to     1     . Recent research by environmental scientists, however, shows that in fact, humans are the most fearsome hunters     2     have the greatest impact     3     animal populations. Human activities have brought many animals close to     4    . In the last 500 years, over 300 species of animals have gone extinct. Some activities, such as hunting and fishing, directly harm animals, while other activities, such as development in towns and cities, impact     5     on animal populations.

When you think of a fearsome hunter, images of lions and sharks may s    1     to mind. Recent research by e    2     scientists, however, shows that in fact, humans are the most fearsome hunters     3     have the greatest impact on animal populations. Human activities have brought many animals close to e    4    . In the last 500 years, over 300 species of animals have gone extinct. Some activities, such as hunting and fishing, directly harm animals, while other activities, such as development in towns and cities, impact i    5     on animal populations.

Cloning is the process of making an exact copy of a plant or animal and developing it either naturally or artificially. The first successfully cloned animal was a sheep    1    (name) Dolly in 1996. In January 2018, the two cloned long-tailed monkeys    2    (announce) by Chinese scientists. They were the first-ever primates,     3    proved to be much harder. The success has led to worldwide praise as a huge breakthrough.

China’s space programme started later than those of Russia and the US, but it has made great     1     in a short time. China became the third country in the world to     2     send humans into space in 2003, when Yang Liwei successfully     3     Earth in the Shenzhou 5 spacecraft. Then Shenzhou 6 and 7 completed     4     second manned orbit and the first Chinese spacewalk,     5     by the vehicle Jade Rabbit being sent to the moon to study its surface. After that, China     6     the Tiangong 2 space lab into space and Tianzhou1 to dock     7     it. This     8     one step further in China’s plan to     9     a space station in the future. More recently, China has sent Chang’e 4 to explore the surface of the far side of the moon to make     10     and observations.