Which of the following is TRUE of the targeted cancer therapy？
A. It has been booming since its first occurrence fifty years ago.
B. Its new development relies on the expansion of treatment target.
C. It has prevented tumors to metastasize or spread through the body.
D. It is a vaccine-like therapy by training the patient"s immune systems.
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What can be learned about Allison Frey according to the last paragraph？
A. The patches on her thyroid and liver have disappeared.
B. Her cancer has been brought under effective control.
C. She can live her life as normally as she did before.
D. She never received any chemotherapy or radiation.
What scientists Johan Feenstra and Rob Hayes did was that______.
A. they made an electronic newspaper
B. they created a piece of videoscreen-like paper
C. they made a tiny piece of primitive e-paper
D. they invented the electrowetting technology
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