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HIV 抗体筛查结果阳性，则可以判定为 ( )
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Segment 1Consider the Aral Sea, for example, located in central Asia. The name Aral Sea is actually translated into “Sea of Islands”, referring to over 1,534 islands that once existed. Today the Aral Sea is (1) _____ to 10% of its original (2) _____. The same thing is happening in other areas that were once flourishing (but) are now (3) _____.Segment 2In the U.S., the world’s largest body of freshwater, the Ogallala Aquifer, an underground lake that extends from the Colorado Rockies to South Dakota going all the way down to the Texas Panhandle with a range of (4) _____ feet of depth. This water resource is what has made America’s plains the “(5) _____” of the world. Unfortunately, like an oil well, this (6) _____. The Ogallala used to have an average depth of 240 feet. Today its average depth is just (7) _____.Segment 3What once was a booming town that relied on the Ogallala Aquifer, has now seen its depths of underground water (8) _____ between 0-50 feet. Many wells are (9) _____ and farmers have been forced to (10) _____ to the government’s Conservation Reserve Program (CRP) in exchange for grants.Segment 4Consider the Colorado river as well, a river that used to run into the Pacific. (11) _____. By the time the water fills the pools of Vegas and irrigates and provides (12) _____ throughout the west, (13) _____ of water makes it to the (14) _____.
45/4的结果是什么?
-25%5是_____
假设x是1，则x+=2后x是什么?
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