下列不属于食品强化目的的是（）。
A.弥补某些食品天然营养成分的缺陷
B.补充食品加工损失的营养素
C.使某些食品达到特定目的的营养需要
D.使食品具有某种色泽和特殊口味
E.强调维生素强化
参考答案：D
解析：食品强化在国外通常有4种目的：弥补某些食品天然营养成分的缺陷；补充食品加工损失的营养素；使某些食品达到特定目的的营养需要；强调维生素强化。
| Mr. Faugel was convinced that student nervousness had affected their scores; to reduce the anxiety of these students who had already been tested, he gave 22 of them a beta blocker before readministration of the test. Their scores improved significantly. The other 8 students (who did not receive the beta blockers) improved only slightly. Second-time test-takers nation-wide had average improvements which were similar to those in Faugel’s non-beta blocker group. Beta blockers are prescription drugs which have been around for 25 years. These medications, which interfere with the effects of adrenalin, have been used for heart conditions and for minor stress such as stage fright. Now they are used for test anxiety. These drugs seem to help test-takers who have low scores because of test fright, but not those who do not know the material. Since there can be side effects from these beta blockers, physicians are not ready to prescribe them routinely for all test-takers. |
"Re-administration" in this passage refers to
A．giving the test again to people without administering beta blockers.
B．giving the test again m both groups after beta blockers have been administered to one group.
C．giving the test to both groups of test-takers and then giving them beta blockers.
D．giving the beta blockers without retesting.