[单项选择] Though explaining the entire human genetic blueprint is still a few years away, scientists have begun laying claim to the stretches of DNA whose codes they have succeeded in cracking. In recent years researchers have flooded the U: S. Patent and Trademark Office with applications for thousands of genes and gene fragments -- and they have stirred a lot of controversy in the process. The biggest problem with patenting genes is that while scientists have at least a general idea of what specific stretches of genetic coding do, often it’’s just that general. Investigators do sometimes succeed in isolating a single, crisp gene with a single known function. Often, however, researchers trying to map genes set no further than marking off fragmentary stretches of DNA that may be thousands of bases in length. These so-called expressed sequence tags may have real genetic information embedded in them, but determining where those fragments are and what their structure is takes more digging. G
A. They’’ are difficult to mark’’ off.
B. They contain unidentified genetic information.
C. They contain the entire human genetic information.
D. They are genes whose specific functions have been identified.

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[单项选择] Though explaining the entire human genetic blueprint is still a few years away, scientists have begun laying claim to the stretches of DNA whose codes they have succeeded in cracking. In recent years researchers have flooded the U: S. Patent and Trademark Office with applications for thousands of genes and gene fragments -- and they have stirred a lot of controversy in the process. The biggest problem with patenting genes is that while scientists have at least a general idea of what specific stretches of genetic coding do, often it’’s just that general. Investigators do sometimes succeed in isolating a single, crisp gene with a single known function. Often, however, researchers trying to map genes set no further than marking off fragmentary stretches of DNA that may be thousands of bases in length. These so-called expressed sequence tags may have real genetic information embedded in them, but determining where those fragments are and what their structure is takes more digging. G
A. those who patent gene fragments are not qualified geneticists
B. the same gene fragments are often patented by different scientists
C. geneticists have no idea what they are going to do with patented genes
D. some of the gene fragments patented contain no real genetic information

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If the entire human species were a single individual, that person would long ago have been declared mad. The insanity would not lie in the {{U}} (1) {{/U}} of the human mind—though it can be a black and raging place indeed. And it certainly wouldn’t lie in the {{U}} (2) {{/U}}. The madness would lie instead in the fact that both of those qualities, the savage and the splendid, can exist in one creature, one person, {{U}} (3) {{/U}}.
We’re a species that is capable of almost dumbfounding kindness. We nurse one another, {{U}} (4) {{/U}}, weep for one another. Ever since science taught us how, we willingly tear the {{U}} (5) {{/U}} and give them to one another. And at the same time, we {{U}} (6) {{/U}}. The past 15 years of human history are {{U}} (7) {{/U}} of those subatomic particles that are created in accelerators and {{U}} (8) {{/U}}, but in that fleeting instant, we’ve visited untold horrors on ourselves. As the {{U}} (9) {

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