Ⅰ.用适当的介、副词填空
1．Science is developing faster than we can ________ think about it.
2．However，________ general the scientists were praised ________ their wonderful scientific advance.
3．Instead，he thinks research efforts should concentrate ________ creating new tissues and organs that can be used to cure diseases like cancer.
4．Cloning human embryos ________ the intention of destroying them shows no respect ________ human life.
5．Some scientists are already pushing ________ with research in order to produce a cloned human baby.
6．China has succeeded ________ producing clones of cows and goats，and continues to research ways ________ which cloning can benefit mankind.
7．If we toy ________ nature，we will have to deal with the consequences.
8．I would like to comment ________ your article，“The perfect copy”．
9．When reading articles about science，we often come ________ difficult scientific terms.
10．For this reason，I also don’t accept the idea of cloning humans—mankind is not ready ________ this.
