22. The (simplest) polymers (are created) when pressure or heat causes small (molecules alter) (slightly) and link together in a long chain.
c 哪里错了?怎么改
26.Because it is often dependent of the conditions (of) crystallization, the composition of the minerals in a rock can be important in determining the rock's geologic history.
of那里怎么改?
be dependent of conditions of ……
n.(名词)
also de.pend.ant One who relies on another especially for financial support.
也作 de.pend.ant 经济援助者:依赖于别人,尤其是经济援助的人
怀疑两个of弄混了
26. Because it is often dependent of the conditions of crystallization, the composition of the minerals in a rock can be important in determining the rock's geologic history.