【推荐1】阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。

Several cities in China have welcomed students back to school. Students in the final year of senior and junior high schools in Shanghai, as well as in Guangzhou and Shenzhen,     1    (return) to school on Monday, according to their     2     (govern).

In Beijing, almost 50,000 students in their final year of senior high school     3     (study) at school since this Monday, and they will participate in the college entrance examination,    4     is scheduled to be held from July 7 to 10 in Beijing. Those in    5     (they) final year at junior high school in Beijing are scheduled to return to school on May 11.

Students and teachers must have their temperatures.     6     (check) and hands sanitized upon arrival. Each person must also wear     7     mask throughout the day, except during mealtimes.

According to the MOE, schools are allowed to resume operation only when the epidemic is     8    (basic) controlled and the epidemic prevention measures are adopted     9     (protect) the health of teachers and students on campus.

The MOE also required schools to make plans to deal     10     the risk of virus transmission before resuming classes,

【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。

Thirty-two percent of 2, 000 men     1     (survey) in the UK said that they did not wash their hands after     2     (use) the toilet. However, the spread of COVID-19 has made more and more men wash their hands more     3     (frequent) than before.

Several months ago,     4     was unusual to see a man using the sinks in a public toilet. However, since the outbreak, more men have been washing their hands. A reporter said, “For once, there are lines in men’s restrooms as the COVID-19 makes men wash their    5     (hand) for the first time.”       

Governments around the world have been stressing the importance of handwashing,     6    should not just be done after people use the bathroom but also throughout the day. Experts say regular handwashing is the best way     7     (prevent) the spread of COVID-19. Health experts in the UK and the USA have told people to wash their hands for    8    least 20 seconds each time—or the time it takes to sing “Happy Birthday” twice.

A listener who called a UK radio station spoke about the first time he realized many men started to believe regular handwashing could be     9     (help) in protecting them from disease. It was last week when he    10     (stop) at the toilets on a highway, he said, “ There were eight sinks and men were carefully washing their hands in all of them. ”

【推荐3】Directions: After reading the passage below, fill in the blanks to make the passage 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.

The Power of AI

Fourteen days. That's the time Chinese scientists took to discover the full genetic sequence of the novel coronavirus (新冠病毒) since its outbreak. It     1     (share) with the WHO immediately, and has now become an important foundation for global researchers in the fight against the COVID-19. But first, let us turn the clock back 17 years,     2     it took months to identify the SARS virus. From months to fourteen days, what changed? It turns out AI played an important part.

The scientists first obtained bronchoalveolar lavage (BAL) fluid (支气管扩张灌洗液) samples from patients,     3     (isolate) the DNA and RNA, and then sequenced the genetic material by comparing them. AI's advantage is its ability     4     (recognize) patterns among a flood of data.

Let me put it in a simple way.     5     (sequence) the coronavirus genome (基组) is similar to looking for a needle in a haystack (干草堆) — looking for genotypes (基因型) with specific characteristics from a huge gene pool. That's     6     search algorithm (算法), a branch of modern Al, comes in. Think of it as an efficient search engine,     7     can find the needle in the haystack. This search algorithm can shorten months-long genetic sequencing     8     weeks or even just a few days. Combined with macro-genomic sequencing and a virus library, this AI technology can also be used in tracking virus mutation (突变).

AI doesn't just support scientists.     9     can also help patients by improving the efficiency of diagnosis (诊断). China launched a Genomics Service,     10     can run multiple virus gene comparisons and produce a detailed report within 60 seconds. This algorithm has been put into use in China and shared to the world for free.

【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词的正确形式。

Jack is a hacker, running a team of hackers. They spend days discovering ways to break into anything that can connect to the Internet     1     (access) information never meant to be seen. If they get to it before a criminal does, then they’ve done the job.

Jack is proud of what he does for     2     living. In Hollywood, hackers are often described as hooded (戴着兜帽的) figures in dark rooms     3     (involve) in illegal activity while tapping keyboards.     4     (actual), hackers are experts at programming and problem-solving with computers. Companies hire hackers to find their breaking point before criminals do.

Hacking is an activity, and what separates any activity from a crime     5     (be) permission. Drivers are free to drive,     6     they do not have permission to drive 150 miles per hour — that’s illegal. Bankers can transfer their clients money, but if they do so     7     permission, that’s illegal.

Hacking isn’t a criminal activity. Someone who involves in the illegal use of hacking should not     8     (call) a “bad hacker” but a “threat actor”. Hackers are people like Jack and his team at IBM — security     9     (profession).

Hackers play a critical role in keeping companies and people     10     (safety). Imagine what bad things could happen without them.

【推荐3】课文语法填空

When it comes to online     1    (safe), here are some     2    (guideline) for you. Firstly, the golden rule of the Internet is to leave the site     3    (immediate) when you see or read something that makes you feel     4    (comfortable). Secondly, you have to protect your privacy. Never give out your address or phone number to someone     5       might use the information     6    (steal) your identity. Thirdly, be polite to others. There is no excuse for     7    (be) rude and you don’t want to become a target for a troll or cyberbully. Trolls often use several false names so     8       they can stay on a site and cyberbullies will also write something mean but it is usually directed     9       particular people. They may also post embarrassing photos and information about those people. However, the     10    (polite) you are, the less likely it is you will be attacked.