问题：
[单选] Techniques to employ the energy of the sun are being developed.A . convert
B . store
C . utilize
D . receive
参考答案：B
参考解析：
本题暂无解析
Techniques to employ the energy of the
Techniques to employ the energy of the sun are being developed.
Techniques to employ the energy of the sun are being developed.
问题：
[单选] Techniques to employ the energy of the sun are being developed.A . convert
B . store
C . utilize
D . receive
参考答案：B
参考解析：
本题暂无解析
