2021语法填空训练第20天语法填空1. 阅读下面短文，在空白处填入 1个适当的单词或括号内单词的正确形式。This year has been rewarding for Yang Xiaojun, a 1._ （research） at the Kunming Institute of Zoology, the Chinese Academy of Sciences (CAS). The green peafowls Yang and his team bred laid over 20 2._ （egg）. They worked hard for these purebred green peafowl eggs for 3._ （many） than six years.The green peafowl is Chinas only native peafowl and was once common in Yunnan Province, 4._ the Kunming Institute of Zoology is based. 5._ , in recent decades a decline in their number led the International Union for Conservation of Nature (IUCN) to list the species as endangered on its Red List of Threatened Species. Habitat 6._ （lose） is one of the main 7._ （ reason） for the species dwindling population, with fewer than 500 purebred green peafowls now left in the wild in China, fewer than the number of pandas.Yang and his team searched many conservation areas 8._ the purebred green peafowl, 9._ （final） finding six. He took them to a laboratory that reproduces their wild habitat, where scientists use genome sequencing technology to breed more.This serves as a beam of light for our protection and research endeavor. However, there is still a long way10._ go before we reach the goal of achieving enough population to ensure proper gene exchange for healthy diversity, Yang said.1._ 2._ 3._ 4._ 5._ 6._ 7 ._ 8._ 9._ 10._2. 阅读下面短文，在空白处填入 1个适当的单词或括号内单词的正确形式。Global biodiversity is now facing wide-ranging and often unprecedented challenges, according to Elizabeth Maruma Mrema, Acting Executive Secretary of the Convention on Biological Diversity, a part of the UN Environment Program.According to Mrema, China has taken practical 1._ （measure） to promote ecological protection and 2._ （establish） many effective mechanisms for green development. The country has also given priority to protecting biodiversity, and is a party to the Convention on Biological Diversity since the 1990s.Yunnan boasts 3._ （ impress） biodiversity. In May, the provincial government released a white paper on its biological diversity, the first of its kind in China. According to the document, while Yunnan accounts 4._ only 4.1 percent of Chinas territorial area, it is home5._ more than 50 percent of the countrys flora and fauna species. The white paper says 90 percent of the ecosystems and 85 percent of the 6._ （importance）species in the province have been 7._ （effective）protectedThe province has adopted a variety 8._ measures to protect biodiversity, including improving its research capabilities, according to Gao Zhengwen, a senior official with the Yunnan Environmental Protection Bureau. It also promotes9._ （science） and technological breakthroughs in the utilization of biological resources in10._ （industry） with important economic value, he said.1._ 2._ 3._ 4._ 5._ 6._ 7 ._ 8._ 9._ 10._3. 阅读下面短文，在空白处填入 1个适当的单词或括号内单词的正确形式。Biological 1._ （scientist） in the Germplasm Bank of Wild Species at the Kunming Institute of Botany of CAS in Yunnan are protecting biodiversity with science and technology. The facility is the 2._ （large） seed bank in Asia and the second of its kind globally, with seeds stored at the facility accounting 3._ one third of all wild plant species in China.Li Dezhu, a lead researcher at the germplasm bank, told Beijing-based Science and Technology Daily that the germplasm bank comprises a seed vault, an in-vitro micropropagation unit, a microorganism bank, an animal germplasm bank, and a DNA bank. Each part plays a unique role in4._ （conserve） rare and 5._ （endange） plant and animal germplasms collected nationwide.At its plant germplasm preservation center and molecular experiment platform, 6._ （near）100 scientists work on seed preservation every day. After 7._ （ care） classification, cleaning and processing, the germplasms8._ （be） stored in the seed bank at minus 20 degrees Celsius or in liquid nitrogen at minus 196 degrees Celsius.By the end of 2019, the bank had collected and 9._ （ store） the genetic materials of over 10,000 kinds of plants. A small container can store up to 20,000 seeds for 100 or even 10._ （many） than 1,000 years, Li said.1._ 2._ 3._ 4._ 5._ 6._ 7 ._ 8._ 9._ 10._阅读理解You may be familiar with the following famous people，but have you heard of their graduation speeches，in which they either share their unforgettable experiences or give you some great inspiration?Michael Dell