A kind of insect gets its name for the body shape, which resembles a long stick. Such an amazing     1     (appear) helps it successfully hide from predators(捕食者) in the branches of trees. These creatures     2     (call) stick insects. Often called walking sticks, they live on every continent except Antarctica. They can be smaller than an inch or longer than     3     18-inch ruler.

There are some other ways stick insects use to defend     4     (they). Some can hit attackers with their spiny legs. Others spray something in no time     5     burns an attacker’s eyes. And some just taste bad. The Peruvian stick insect is one of them. This stick insect is     6     (easy) to see because it has red, yellow, and black markings than others. These bright colors are a warning to predators, who know it discharges something with an unpleasant smell when     7     (attack).

Stick insects are mostly nocturnal, which means they are active at night, when they spend their time eating leaves. Darkness makes it harder for most predators     8     (discover) them. However, darkness doesn’t protect stick insects     9     one super set of insect hunters, insect-eating bats. These bats use echolocation(回声定位) to find yummy bug dinners. And stick insects are     10     (absolute) on the menu as something these bats want to eat!

I was one of the people     1     work on Qinghai­Tibet Railway，which was completed by     2     (overcome) the most difficult engineering challenges to protect the delicate ecosystem.To allow animals to move     3     (safe) and freely，thirty­three passages have been built.To prevent damage to wetlands and grasslands,675 bridges，which is about 160 kilometres in     4     (long)，were build and 140,000 square metres of wetland     5     (move) to protect its distinct ecosystem.Tanggula Station，    6     (locate) at over 5,000 metres above sea level，is the highest railway station in the world.To keep us     7     (health)，several oxygen­making stations were constructed.To protect Cuona Lake     8     construction waste，a twenty­kilometre wall was built.Thanks to our     9     (effort)，passengers who have been attracted by the Qinghai­Tibet Plateau，have been enjoying these     10     (magic) landscapes.

China has formally made an announcement of its first five national parks of 230, 000 from Tibet to Hainan, focusing on     1     (preserve) of its most valuable bio-resources.

Giant Panda National Park will surely be     2     hit with the swells of tourists who come yearly for some of the world’s cutest animals.     3     (cover) three provinces (Sichuan, Shaanxi and Gansu), the region is the panda’s natural habitat.

The intersection (交汇处) of Jilin and Heilongiang provinces is home to Northeast China Tiger and Leopard National Park, which     4     (set) out to protect the habitats of those two species since its start. It is the unique area       5     live both wild Siberian tigers and Siberian leopards.

China’s best-preserved rainforest is in Hainan, the only place in the world     6     (find) the Hainan black-crested gibbon(黑冠长臂猿). Hainan Tropical Rainforest National Park protects the gibbons and     7     (they) environment.

Unlike those three, Wuyishan National Park in Fujian Province and Sanjiangyuan National Park on the Qinghai-Tibet Plateau focus     8     (much) on preserving multiple animals than     9     (specific) protecting one species. They serve various rare and endangered species and conserve biodiversity.

Now, with some tourist programs     10     place, these parks will be a good way for tourists to truly experience the natural originality as well as expansive Chinese landscape.