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CCl4是非极性分子，C-Cl键为（）。

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指出PH3的空间构型，并说明发生的是哪种类型杂化？PCl5呢？

债务人被宣告破产后，不得再转入重整程序或和解程序。（）

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Task 3Directions: The following is an introduction to Stamp.comTM. After reading it, you are required to complete the outline below it . You should write your answers briefly (in no more than three words) on the Answer Sheet correspondingly.With nearly 732,000 monthly subscribers, Stamps.comTM is the leading provider of Internet-based postage solutions. Stamps.com was the first company to be approved by the US Postal Service to offer a software-only postage service that lets customers buy and print postage online. The Company targets its services to small businesses, home offices and online retailers, and currently has PC Postage partnerships with Avery, Microsoft, HP, the US Postal Service and others. Stamps.com is a publicly traded company on the NASDAQ under the symbol STMP.Stamps.com ServiceStamps.com offers customers a secure Internet mailing solution to print postage using their existing computer, printer and Internet connection without having to go to the Post OfficeTM. Small businesses, home offices and online retailers can now manage their mailing and shipping operation more efficiently and securely than with postage meters or regular stamps. Everyone can enjoy the convenience of online postage and avoid waiting in line at the Post Office. In addition, for businesses, Stamps.com is at least 50% cheaper than a traditional postage meter and allows for easy tracking and reporting of postage expenditures (费用).

Task 5Directions: Read the following passage. After reading it, you should give brief answers to the 5 questions that follow. The answers (in no more than 3 words) should be written after the corresponding numbers on the Answer Sheet.Driverless cars are vehicles that are self-driving and able to navigate (行驶于) the environment without requiring a human. They are also referred to as robotic cars and self-driving cars. Here are some facts about driverless cars.They are able to recreate roadways in three dimensions.They must recognize pedestrians (行人), road signs, other vehicles, and traffic lanes in order to function.A driverless car would be capable of functioning without human intervention (干预) of any kind.The first driverless car model was operated by Google under Alphabet Inc. in 2015.It has been estimated that by 2050 almost all vehicles on the road will be driverless.Human error accounts for roughly 90% of accidents on roadways. The creation of driverless cars was in an effort to reduce accidents.One of the major issues for driverless cars is the weather. When the weather is bad, it results in a huge amount of data that must be processed and it can affect the process.Driverless cars could help eliminate the issue of drunk driving.1. What are driverless cars also called?Robotic cars and ___.2. What should a driverless car do in order to function on a road?It must recognize , other vehicles, and traffic lanes.3. When was the first driverless car model operated?In _.4. What has been estimated about vehicles on the road by the year 2050?Almost all of them will _.5. What is mentioned about the issue of drunk driving?Driverless cars could help __________________.