When ______ comes to research into heart disease and its effects on the body, we
题型:不详难度:来源:
When ______ comes to research into heart disease and its effects on the body, we do not have adequate substitutes for the use of animals. |
答案
B |
解析
考查固定句型:when it comes to“当涉及…的时候”,句意是:当涉及研究心脏病和它对身体的影响时,我们不会有适当的代用品来代替动物。选B。 |
举一反三
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