题目内容:
Manyothernewtechniquesarenowavailablethatenablemoreresearch(do)inthetesttubetoseeifchemicalsproduceharmfulbiologicaleffects.
参考答案:【答案仅供学习,请勿对照自行用药等】
Manyothernewtechniquesarenowavailablethatenablemoreresearch(do)inthetesttubetoseeifchemicalsproduceharmfulbiologicaleffects.