文档介绍：解释 1
归纳 2
加强 5
黑脸20. (27836-!-ITEM-!-188;#058&003666) 9
假设和评价 10
填空 16
削弱 18
解释
1. (24021-!-item-!-188;#058&00l fall and thus add to any existing snow cover.
(D) The nutrients on which algae rely are common in seawater throughout the Antarctic.
(E) More sunlight filters through a layer of ice than through an equally thick layer of snow.
28. (30615-!-item-!-188;#058&005660)
Hutonian Government Official: Federal law requires truck drivers to take a long break after driving for ten hours, but truck drivers frequently do not comply. Since the public rest areas along our highways cannot accommodate all the drivers needing a break, we plan to build more rest areas to increase the rate of compliance.
Hutonian Business Representative: But if the parking lots around our businesses are considered, there are more than enough parking places.
Which of the following, if true about Hutonia, would provide a reason for persisting with the government official's plan despite the objection?
(A) Public parking areas are evenly distributed along the highways.
(B) Truck drivers are most likely not to comply with the federal law if the total time required for a trip exceeds ten hours by less than an hour.
(C) In comparison to public rest areas, private parking lots near highways tend to be time-consuming for drivers to reach.
(D) Even when rest areas are available, some truck drivers park in places, such as highway access ramps, where their trucks are likely to cause accidents.
(E) Some public parking areas, particularly those on heavily traveled roads, are substantially larger than others.
44. (33039-!-item-!-188;#058&007556)
Half of the subjects in an experiment--the experimental group--consumed large quantities of a popular artificial sweetener. Afterward, this group showed lower cognitive abilities than did the other half of the subjects--the control group--who did not consume the sweetener. The detrimental effects were attributed to an amino acid