为了提高测试的效率，应该
A、随机选取测试数据D
暂无解析
WearegladtoreceiveyourtelegraphicorderofMay6,______regretthatwecannotsupplythegoods______theendofMay.
EveryoneknowsthatChina’sBristlesareofsuperiorquality______thosefromothercountries.
_______thefirstlanguageisusedintheteachingofthesecondlanguageintheGrammar-TranslationMethod.
Weregret______toacceptyourtermsofpaymentandthereforehavetoreturntheordertoyou.
____wateristheirenergysource,____tropicalcyclonesareseasonal.
