If you go out to the fields at night in spring or summer, you can hear frogs singing 【小题1】(happy) here and there. It seems as if they were performing a field group singing.

The frog is a good and useful creature that benefits human beings. They can catch fast-moving 【小题2】 (insect). Each frog eats a large number of pests (害虫) that are 【小题3】 (harm) to crops. This little creature is regarded as “the natural enemy of pests”.

But now frogs 【小题4】 (get) fewer and fewer. This is 【小题5】 they are killed and put on the table as a delicious dish by their chief enemy, human beings. It is a shameless and cruel act, isn’t it?

The cause that is responsible 【小题6】 the rapid reduction of frogs is that farmers use insect killers to kill pests and frogs get killed as a result of drinking poisoned water while 【小题7】 (eat) poison-killed insects.

Something must be done as soon as possible 【小题8】 (save) frogs. If we don’t punish those 【小题9】 sell and kill frogs to make money, then one day all of us 【小题10】 (punish) by nature for failing to keep them.

A farewell party for 22-year-old Ya Ya at Memphis Zoo took place last Saturday. Ya Ya, a giant panda, was surrounded by bamboo and given a special ice cake made of grapes, sugar cane (甘蔗), and cookies, 【小题1】 (take) on a harmonious scene, according to pictures and videos shared online.

In 2006, Ya Ya began to lightly shed fur, 【小题2】 skin issue leading to fur loss, which worsened in 2014. Ya Ya’s health 【小题3】 (weigh) on a majority of Chinese people. And online, people started pressing for Ya Ya’s return to China.

Since the Chinese Association of Zoological Gardens received reports of Ya Ya’s poor health condition, Chinese experts have swung 【小题4】 action to assist in the care of Ya Ya to ensure her health and well-being. “Contrary to 【小题5】 most netizens might assume, Ya Ya is in a relatively stable (稳定的) health condition other than the fur loss, having a good appetite and stable weight. China will get Ya Ya home 【小题6】 (safe) at the fastest speed,” spokesperson of China’s ministry of foreign affairs, Wang Wenbin, said on Tuesday.

On April 27t, Ya Ya returned to Shanghai, safe and sound. One of the local 【小题7】 (resident) said, “The number of people waving at Ya Ya’s aircraft before it lands in Shanghai 【小题8】 (be) beyond our imagination. Having anticipated Ya Ya’s return for a longtime, we, at this moment, are so 【小题9】 (excite)! It is crucial that Ya Ya be exposed to a familiar circumstance 【小题10】 is of great benefit to her health recovery.” To our shock, Chinese people’s affection for Ya Ya hasn’t reduced despite the elapse (流逝) of 20 years.

On Oct 8th, 2019, Iceland honored the passing of Okjokull, the first of Iceland’s glaciers to disappear on account of climate change. In 1890, the glacier ice covered 16 square kilometers but in 2012, it 【小题1】 (measure) just 0.7 square kilometers. A monument is set up at the site of the former glacier, 【小题2】 bears the inscription (题词) A Letter to the Future, and is intended 【小题3】 (raise) awareness about the decline of glaciers and the effects of climate change.

The world is quickly realizing 【小题4】 is necessary to actively pull carbon dioxide out of the atmosphere to prevent the ill effects of climate change. Scientists and engineers have proposed a 【小题5】 (various) of techniques to deal with the change. 【小题6】 , most would be extremely expensive — without 【小题7】 (bring) any profits. Therefore, no one wants to foot the bill.

One method explored in the past decade might now be a step closer 【小题8】 becoming practical. The process 【小题9】 (involve) pumping CO₂ carried through the air down into methane hydrates (甲烷水合物) right under the seafloor, where the gas will be 【小题10】 (permanent) stored, or separated. The incoming CO₂ pushes out the methane, which will be piped to the surface and burned to provide electricity, to power the separation operation or to bring in money to pay for it.