摘要： When comes to research into heart disease and its effects on the body, we do not have adequate substitutes for the use of animals. A． it B. this C. that D. which
网址：http://m.1010jiajiao.com/timu3_id_3223685[举报]
When ______ comes to research into heart disease and its effects on the body, we do not have adequate substitutes for the use of animals.
A. that B. it C. this D. what
查看习题详情和答案>>
When ______ comes to research into heart disease and its effects on the body, we do not have adequate substitutes for the use of animals.
- A.it
- B.this
- C.that
- D.which
When ______ comes to research into heart disease and its effects on the body, we do not have adequate substitutes for the use of animals.
A. that B. it C. this D. what
查看习题详情和答案>>