Our ape-men forefathers had no obvious natural weapons in the struggle for (1) in the open. They had neither the powerful teeth nor the strong claws of the big cats. They could not (2) with the bear, whose strength, speed and claws (3) an impressive " small fire" weaponry. They could not even defend themselves (4) running swiftly like the horses, zebras or small animals. If the ape-men had attempted to compete on those terms in the open, they would have been (5) to failure and extinction. But they were (6) with enormous concealed advantages of a kind not possessed by any of their competitors.
In the search (7) the pickings of the forest, the ape-men had (8) efficient stereoscopic vision and a sense of color that the animals of the grasslands did not (9) . The ability to see clearly at close range permitted the ape-men to study practical problems in a way that lay far (10) the reach of the ori
A. faster
B. slower
C. more stable
D. safer
| This week marks the 10th anniversary of
the Alar apple scare, in which many American consumers were driven into a panic
following the release of a report by an environmental organization claiming that
apples containing the chemical Alar posed a serious health threat to
preschoolers. The report was disseminated through a PR (Problem Report) campaign
and bypassed any legitimate form of scientific peer review. Introduced to
the American public by CBS’ "60 Minutes," the unsubstantiated claims in the
report led some school districts to remove apples from their school lunch
programs and unduly frightened conscientious parents trying to develop good
eating habits for their children. Last month, Consumers Union released a report warning consumers of the perils of consuming many fruits and vegetables that frequently contained "unsafe" A. by Consumers Union B. by a health center C. through a news agency D. through the government [单项选择]Modern English is mainly derived from _________.
A. the Gaelic language B. the "British" language C. the Germanic language D. the Anglo-Saxon language [判断题]像出口猪、牛、羊、鸡一样，出口观赏鱼必须来自注册饲养场。 ( )
[单选题]膜式蒸发同其他常规的蒸发工艺相比，最显著的优点是：( )
A.设备材质要求低； B.传热效率高； C.操作简便； D.装置造价低。 [判断题]采用回弹法检测混凝土强度时，混凝土表面应为混凝土原浆面。
[单选题]装设避雷针、避雷线、避雷网、避雷带都是防护( )的主要措施。
A.雷电波侵入 B.二次放电 C.直击雷 [判断题]劳动者对用人单位管理人员违章指挥、强令冒险作业，有权拒绝执行。
[单选题]活塞敲缸响,一般有火花塞跳火一次,发饷( )次的规律。
A.1 B.2 C.3 D.4 [单选题]（ ）是建筑消防设施日常管理和火警应急处理的专用场所。
A.消防值班室 B.安防保安室 C.门卫传达室 D.消防控制室 我来回答: 提交
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