【推荐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。

    1    (address)anxiety and mental health concerns caused by the novel coronavirus outbreak, the National Health Commission has required provincial-level regions to combine    2    (psychology) support resources and standardize such public services.

"Colleges    3     (equip) with psychological centers are also encouraged to step up intervention and counseling（建议） to students    4     may be affected by the disease's spread," said Wang Bin, deputy director of the commission's disease control and    5    (prevent) bureau（局，办事处）at a news conference held on Monday.

Days of intensive（密集的）work had exhausted him and caused him to lose his temper for a brief moment. The doctor quickly collected    6    (he) and went back to    7     (treat) patients.

Yang Fude , Party secretary of the Beijing Hui long guan Hospital, said many medical workers and personnel    8    charge of registering and screening residents in neighborhoods    9     (face) tremendous pressure and are pushing their mental and physical     10    (limit).

【推荐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。

Bacteriophages (phages) and other mobile genetic elements (MGEs) exert an immense selective pressure on     1    (bacterium), which in response have developed a broad arsenal of defence mechanisms.     2     these, CRISPR–Cas (clustered regularly interspaced short palindromic repeats–CRISPR-associated proteins) is a group of widespread RNA-guided adaptive immune systems that are classified into two broad classes, six types and numerous subtypes according to their genetic composition and interference mechanism1. The CRISPR–Cas immune response starts with the    3    (acquire) of short DNA fragments (protospacers) from invading MGEs. The protospacers are inserted as spacers between repeats in the CRISPR array to create a memory of the infection. Next, the CRISPR array is expressed    4     a long transcript that is processed into small, mature CRISPR RNAs (crRNAs), each    5    (carry) a spacer sequence flanked by part of the repeat. Finally, the interference complexes, composed     6     a crRNA and one (class 2) or more (class 1) Cas proteins, degrade the complementary nucleic-acid targets that are often found next to a short protospacer-adjacent motif (PAM). The specificity and programmability of the CRISPR–Cas machinery     7    (lead) to the development of various biotechnological applications in genome editing, molecular diagnostics and more.

In the evolutionary arms race with CRISPR–Cas, phages and other MGEs have evolved diverse strategies to block or circumvent immunity. One widespread evasion mechanism uses protein-    8    (base) CRISPR–Cas inhibitors called anti-CRISPRs (Acrs). So far, more than 100 Acr protein families have been identified    9     inhibit different stages of the CRISPR–Cas immune response, mainly by interacting directly with Cas proteins. For example, Acrs prevent crRNA loading, effector-complex formation, and target DNA binding and cleavage. Notably, the discovery of these natural ‘off switches’ has presented new opportunities    10    (control) the activity of CRISPR–Cas technologies.

【推荐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的正确形式。

In Lin Qiaozhi’s eyes, life is precious. When others entrusted her with their lives, it was virtue     1     carried her through a life of hard choices. She did not choose     2     (marry) as the majority of girls did, but chose to study medicine.     3     (fortunate), her brother responded against her choice and complained about it, thinking of the high tuition fees. Atter graduation, Lin Qiaozhi won a scholarship from a union and     4     (hire) as a resident physician in a famous hospital. Once     5     (appoint) as scholar to a clinic in a faraway country, she impressed her colleagues by     6     (reject) a well-paid offer. In the decades after liberation, Lin Qiaozhi was elected     7     leaders in numerous key     8     (position) and led all the staff to the medical cause of China. She published     9     great deal of medical research,     10     made her well known to the world.

【推荐2】Directions: After reading the passage below, fill in the blanks to make the passages coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank.

Three scientists have won the 2020 Nobel Prize in physics for their discoveries related to massive objects called black holes.

The Royal Swedish Academy of Science said Tuesday it would give half of the $ 1.1 million prize to Roger Pen-rose of Britain's University of Oxford ,     1    (add) that he had used mathematics to prove that black holes were a direct result of "Albert Einstein's general theory of relativity."

Germany's Reinhard Genzel and Andrea Ghez of the United States will share the other half of the physics prize. The academy honored the two scientists "    2    the discovery of a super-massive compact object at the center of our galaxy." That object was a large black hole. The physics   prize celebrates     3    the Nobel Committee called "one of the most exotic objects in the universe."

Galaxies are huge systems that contain billions of stars. Black holes might exist at the center of every galaxy. Nothing, not even light,     4    escape their gravity. Time comes to a stop     5    it gets closer.

Roger Pen-rose proved that the formation of black holes was possible. His work       6    (base) heavily on Einstein's general theory of relativity. British astronomer Martin Rees noted it was   Pen-rose's work     7    fueled a "renaissance" in the study of relativity. He added, Pen-rose, together with Setphen Hawking, helped support evidence for the Big Bang and black holes. "Pen-rose and Hawking are the two Individuals     8    have done more than anyone else since Einstein to deepen our knowledge of gravity," Rees said.

The first picture Genzel and Ghez got of the object was in 1995. A year later, another picture appeared to show that the stars near the center of the Milky Way were moving around

    9    . A third picture led Genze and Ghez to think they had discovered it. Andrea Ghez is the fourth woman     10    (award) the Nobel Prize for physics. The others were Marie Curie in 1903, Marie Goeppert-Mayer in 1963, and Donna Strickland in 2018.

【推荐3】阅读下面短文, 在空白处填人1个适当的单词或括号内单词的正确形式。

March Boedihardjo, a nine﹣year﹣old math genius (天才) from Hong Kong, will attend the Hong Kong Baptist University (HKBU) and become the    1    (young) college student in the city. The university will create a    2    (special) designed five-year course which will see him get a Bachelor's and Master's degree. The university thought long and hard about whether or not    3    (admit) March. HKBU president, Professor Franklin Luk, announced at a press conference, “The decision was made after a two-month    4     (discuss) among various departments of the university and March's parents.”March also met the press and raised     5     victory sign when he entered the meeting room. He seemed very confident.

There has been worry from educators that    6    (attend) university so young, March will miss out on    7     (society) skills. His new classmates will all be ten or more years older than he is. March said this will not be a problem as he has already had experience of studying with older students. He has already spent two years in England,     8     he passed advanced math exams with A grades. “My schoolmates in Oxford University were over 18 and we often    9     (talk) about mathematics problems. I think I won't have problems in communicating    10     people older than me, ”said the nine﹣year﹣old.