Evenwiththenewdevelopmentinresearch,onlyatiny________ofalltestsaredonewithoutusinganimals.
D
本句的意思是：“即使研究有了新的发展， 只有一小部分的试验可以不用动物” 。因此答案为 D。variety 和 plenty 分别表示“多样”和“大量的”，意思不合适。 amount 后只能接不可数名词，而 test 是可数名词。
OneofthedisadvantagesintheGrammar-TranslationMethodisthatthetextsaretakenfrom_____,thelanguageofwhichdoesn'toftenmeetthepracticalneedsofthelearners.
IntheGrammar-TranslationMethod,understandingandmemorizationof_____________wereregardedasimportantmeansofdevelopingmentality.
____yourinformation,wehavereceivedacrowdofenquiriesfrombuyersinotherdirections.()
Thenewspaperwillhavetoclosedownifitcannotincreaseits________considerably.
Asactivitycarried________asonethinksfitinone’ssparetime,leisurehasseveralfunctions.