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　　It is a popular misconception that nuclear fusion核聚变 power is free of radioactivity放射性; in fact, the deuterium- tritium氘和氚 reaction that nuclear scientists are currently exploring with such zeal produces both alpha particles and neutrons. (The neutrons are used to produce tritium from a lithium blanket surrounding the reactor.) D和T都会发出射线，阿尔法粒子和中子，中子来自于锂变成的T Another common misconception is that nuclear fusion power is a virtually unlimited source of energy because of the enormous quantity of deuterium in the sea. Actually, its limits are set by the amount of available lithium, which is about as plentiful as uranium铀 in the Earth‘s crust. Research should certainly continue on controlled nuclear fusion, but no energy program should be premised on its existence until it has proven practical. (122 words)

　　1. It can be inferred from the passage that the author believes which of the following about the

　　current state of public awareness concerning nuclear fusion power?

　　(A) The public has been deliberately misinformed about the advantages and disadvantages of nuclear fusion power.

　　(B) The public is unaware of the principal advantage of nuclear fusion over nuclear fission as an energy source.

　　(C) The public‘s awareness of the scientific facts concerning nuclear fusion power is somewhat distorted and incomplete.

　　(D) The public is not interested in increasing its awareness of the advantages and disadvantages of nuclear fusion power.

　　(E) The public is aware of the disadvantages of nuclear fusion power but not of its advantages.

　　For the following question, consider each of the choices separately and select all that apply

　　2. The passage provides information that would answer which of the following questions EXCEPT?

　　A How much incidental radiation is produced in the deuterium tritium fusion reaction?【how much，没说具体的量，自己为啥没选呢?可能看着看着就忘记是EXCEPT了】

　　B What is likely to be the principal source of deuterium for nuclear fusion power?

　　C Why are scientists exploring the deuterium-tritium fusion reaction with such zeal?

　　Roger Rosenblatt‘s book Black Fiction, in attempting to apply literary rather than sociopolitical criteria to its subject, successfully alters the approach taken by most previous studies. 【rather than表明是用literary，successfully 表明作者支持】As Rosenblatt notes, criticism of Black writing has often served as a pretext借口 for expounding阐述 on Black history. Addison Gayle‘s recent work, for example, judges the value of Black fiction by overtly明显地，公开地 political standards, rating each work according to the notions of Black identity which it propounds提出，建议. Although fiction assuredly springs from political circumstances, its authors react to those circumstances in ways other than ideological, and talking about novels and stories primarily as instruments of ideology circumvents much of the fictional enterprise.