甲公司与丁公司、戊公司签订的转卖大蒜的合同的效力如何？并说明理由。

Which of the following statements about the experiment mentioned in the passage is true？

A．Only the twins are defected.

B．Most of the babies are delivered by means of Caesarean.

C．There are some troubles during all mothers' pregnancies.

D．One baby appears to be abnormal.

Which of the following statements about the experiment mentioned in the passage is TRUE？

A．Only the twins are defected.

B．Most of the babies are delivered by means of Caesarean.

C．There are some troubles during all mothers' pregnancies.

D．One baby appears to be abnormal.

Which of the following statements about the experiment mentioned in the passage is true？

A．Only the twins are defected.

B．Most of the babies are delivered by means of Caesarean.

C．There are some troubles during all mothers' pregnancies.

D．One baby appears to be abnormal.

Which of the following statements about the experiment mentioned in the passage is true？

A．Only the twins are defected.

B．Most of the babies are delivered by means of Caesarean.

C．There are some troubles during all mothers' pregnancies.

D．One baby appears to be abnormal.

Which of the following statements is NOT mentioned in the passage？

A．Radical reforms are essential for the increase of productivity.

B．New ways of organizing workplaces may help to increase productivity.

C．The reduction of costs is not a sure way to gain long-term profitability.

D．The consultants are a bunch of good-for-nothings.

Which of the following statements is NOT mentioned in the passage？

A．Radical reforms are essential for the increase of productivity.

B．New ways of organizing workplaces may help to increase productivity.

C．The reduction of costs is not a sure way to gain long-term profitability.

D．The consultants are a bunch of good for nothing.

Which of the following statements about technology is NOT mentioned by Carol Wilson？

A．Technology was not as prevalent in the classroom ten years ago as it is now.

B．Technology must be integrated into teaching and learning.

C．It's not necessary to use technology unless it is appropriate.

D．It' s important that the classroom be equipped with upgradeable devices.

Which of the following statements is NOT mentioned in the passage？ ______ .

A．Package is often a successful advertisement.

B．Children are often made to buy a product by its package with attractive pictures.

C．A buyer is also attracted by the size of the container.

D．On seeing a well-designed container, a buyer often does not care about what is inside it.

Which of the following statements is not mentioned in the text？ ______.

A．EU member countries hold that the European Parliament is of importance.

B．The European Project is the worst vision of all.

C．EU member countries maintain that central Europe are gaining more common themes.

D．Anti-EU parties are never detrimental to the building-up of the European collaboration.

Which of the following statements is NOT mentioned by the author？

A．Nurses are specially trained to offer bedside care to sick persons.

B．Patients can not do without nurses.

C．Nurses can not practice medicine.

D．Nurses often work during the night.