Two sisters, who were joined in the chest and abdomen, have been successfully separated in a surgery by a 78-member team in Nigeria's capital, Abuja. Mercy and Goodness Ede are now well enough to go home six weeks after surgery, according to the surgeon Emmanuel Ameh, who led the team that performed the operation at National Hospital. The surgery to separate the twins happened in November last year but details have only just been released by the hospital. The surgeon wanted to ensure there were no post surgery complications.
The girls are the first to be successfully separated at the government-run specialist center, National Hospital spokesman Dr. Tayo Haastrup told CNN. It took around 13 hours for the team working from two operating theaters at the hospital to separate the twins, according to the hospital. "We are just have special feelings that the team that worked on this surgery were all Nigerians. It was done in Nigeria and the parents didn't have to go outside the country," Haastrup said.
  Haastrup said the surgery, which runs into thousands of dollars, was done free of charge to the parents, who would not have been able to afford the surgery. The twins were born on August 13 last year but Ameh said the surgery was delayed until November because of some complications. Separating conjoined twins is a complicated and dangerous procedure, and not all twins can be separated—because of shared organs or other complications.
Ameh said surgeons on the team were worried that a large section of the girls' chest would be open and at risk of being infected once they were separated and they had to create artificial skin large enough to cover the area, which took several weeks. "We needed to determine if they could live independently when they are separated,"Ameh told CNN. "We also had to get some medical equipment that were not available," he added.

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1.Why wasn’t the surgery published in November?

A Because they wanted to make sure the twins were healthy.

B Because the twins wouldn’t cure at National Hospital.

C Because the twins needed six weeks to be back home.

D Because the twins got separated only in their hearts.

解析：选A。推理判断题。根据第一段The surgeon wanted to ensure there were no post surgery complications.可知医生想确保他们没有并发症，即要确保他们的健康，故选A。

2.What are Haastrup’s special feelings?

A Happy and proud.

B Sorry and calm.

C Upset and excited.

D Angry and Anxious.

解析：选A。推理判断题。根据第二段"We are just have special feelings that the team that worked on this surgery were all Nigerians. It was done in Nigeria and the parents didn't have to go outside the country." Haastrup said.可知他为这个手术感到开心且自豪，故选A。

3.Who might pay for the surgery?

A The girls’ parents.

B The National Hospital.

C A generous man.

D Emmanuel Ameh.

解析：选B。推理判断题。 根据第三段Haastrup said the surgery, which runs into thousands of dollars, was done free of charge to the parents, who would not have been able to afford the surgery.可知手术费用高，是免费给那些无力承担手术费用的父母做的，可推断费用可能由医院承担，故选B。

4.What did surgeons do to stop the chest infection?

A They bought medical equipment.

B They created artificial skin.

C They ended the dangerous procedure.

D They let the twins use the same organs.

解析：选B。细节理解题。根据最后一段... and at risk of being infected once they were separated and they had to create artificial skin large enough to cover the area...可以得知为防止胸部感染，他们制造了人造皮肤，故选B。