[单项选择]I’ve never（）the theory that people are more important than animals.
A. subscribed to
B. hung on
C. engaged in
D. indulged in

[单项选择]I’ve never（）the theory that people are more important than animals.
A. subscribed to
B. hung on
C. engaged in
D. indulged in

[单项选择]I’ve never（）the theory that people am more important than animals
A. subscribed to
B. hung on
C. engaged in
D. indulged in

[单项选择]I’ve never______the theory that people are more important than animals.
A. subscribed to
B. hung on
C. engaged in
D. indulged in

[单项选择]In theory, millions of people suffering devastating diseases may one day be helped or even cured with treatments derived from human embryonic stem cells, but human embryos must be destroyed to obtain these stem cells. So research involving them is （　） in controversy, with each side arguing passionately for the rights of the sick or the rights of the unborn.
A. refuted
B. modified
C. marred
D. mired

[填空题]

Supermarket shoppers have never been more spoilt for choice. But just when we thought traditional systems of selective farming had created the most tempting array of foods money can buy, we are now being presented with the prospect of genetically created strains of cabbages, onion, tomato, potato and apple.
It may not tickle the fancy of food purists but it fires the imagination of scientists, last week they discovered that the classic Parisian mushroom contains just the properties that, when genetically mixed with a wild strain of mushroom from the Sonora desert in California, could help it grow en masse while at the same time providing it with the resilience of the wild strain.
66. ______
"We have found a way of increasing the success rate from one to 90 per cent."
This is just one of the many products that, according to skeptics, are creating a generation of "Frankenfoods". The first such food that may be consumed on a wide s