In what day does science do something harmful to mankind？（）

Choose the most appropriate words to complete the summary of Unit 3 Passage A（每词只选一次，只需填字母）The passage is speaking strongly against the patent system--based upon the (1)______that “patent-lawyers are s of obfuscation” and that patents are being used both by established (2)______and patent trolls to stifle further innovation. The system has created a parasitic (3)_______ of trolls and defensive patent-holders, who aim to block innovation, or at least to stand in its way (4)______ they can grab a share of the spoils. An early study found that newcomers to the semiconductor business had to buy licenses from incumbents for as much as $200m. Patents should spur (5)_______ of innovation; instead, they are used to lock in incumbents' advantages. The patent system is expensive. A decade-old study (6)_______ that in 2005, without the temporary monopoly patents bestow, America might have saved three-quarters of its $210 billion bill for prescription drugs. The expense would be worth it if patents brought innovation and prosperity. The Economist has a longstanding pro-competition anti-patent bent. In the 1800's The Economist proposed full (7)______of the patent system. The paper's stance is no longer opposition, but does come with the interesting statement that “government should force the owners of intellectual property to share.” Their proposals: 1) Patent Use Requirement--the patent should only be (8)______ if the patentee uses it in the marketplace. 2) Patent (9)______--patents should be easier to challenge without going to court and the burden of proof should be lower. 3) The standard for non-obviousness should be raised so that patents are only granted to those “who work hard on big, fresh ideas, rather than those who file the paperwork on a tiddler.” 4) Patent term should be reduced--(10)______ in fast-moving technology areas.

【11】：（）

【12】：（）

【3】：（）

The results of this experiment do not（）those of the studies that the team of scientists had conducted previously.

Which of the following best describes students like Li Xiang？（）

【5】：（）

What will an electronic pet be like if its user stays up late？（）

Scarcely had（A）we come into（B）the classroom than（C）the bell rang（D）.