［A］ conclude ［B］ to conclude ［C］ concluding ［D］ concluded

Retrofitting houses to use less energy should be a no-brainer for homeowners.（1）time,money spent on ways to reduce heat loss from draughty houses should produce a（2）return in lower fuel bills.In practice,many are cautious.Some improvements,such as solid-wall insulation and solar panels,can take over 25 years to（3）their initial cost.Few owners are willing to wait that long by then many are likely to have（4）and moved on Several governments have started finance schemes designed to（5）this problem.Since 2008 PaCE programmes have offered American homeowners loans to（6）improvements,repaid through higher local taxes on the property,（7）it belongs to.In Britain,the Green Deal offers loans over a 25-year period,with repayments added to energy bills.Countries including France and Canada have similar（8）In theory,these schemes should boost investment in common energy-saving measures,such as extra insulation and new boilers,（9）the first owner does not have to pay all the costs in advance But enrolment rates have（10）,according to Sean Kidney at the Climate Bonds Initiative,a think tank.In Britain,just 1%of those assesseed for the Green Deal have signed up.In Berkeley,California,home of the first PACe scheme,the（11）rate is similarly low.Homeowners are（12）chiefly because the interest rates on the loans look high.The Green Deal charges 7%;some PaCe schemes a hefty 8%.As these rates are fixed for decades,they will（13）look unattractive when（as now）short-term interest rates are low Many people also（14）they will save enough on their energy bills to cover the repayments Fc or instance（15）in britain that installing loft insulation can cut energy bills by 20%have been dented by a government study that found it（16）gas consumption by only 1.7%on average.Others fear that green loans may reduce the value of their home.In America,firms that underwn mortgages are（17）PACE loans Green loans have not been a failure everywhere.Around 250,000 households in Germany（18）for them each year.They do so（19）they need pay only 1%interest on them each year thanks to an annual public subsidy of 1.5 billion.Whether that is a（an）（20）use of taxpayers’money is another question（14）选？

A.contend
B.doubt
C.conclude
D.debate

Being fat doesn’t necessarily mean you're unhealthy,according to a new study.Researchers at York University in Toronto found that obesity 1 doesnt increase your risk for mortality 2 it's 3 another metabolic risk factor,such as high blood sugar or high levels of bad cholesterol This is 4 most of the literature,Jennifer Kuk,a（n）5 professor of kinesiology at York University,writes in a press 6.She says 7,most studies defined"healthy"obesity 8 having up to one metabolic risk factor--which is an issue,9 conditions like high blood sugar and bad cholesterol increase mortality risk for anyone,skinny or fat.This is likely 10 most studies have reported that healthy'obesity is still 11 higher mortality risk,she says.The study looked at data of 54,089 men and women from five large studies,and 12 them into two groups:those who were obese and had no metabolic risk factors,and those who were obese and had metabolic 13 such as elevated glucose,blood pressure or lipids Researchers then looked at how many people in each group died,and 14 their numbers to the death rate for 15-weight folks who had no metabolic risk factors We found that a person of normal weight 16 no other metabolic nsk factors is Just as likely to die as the person with obesity and no other risk factors,"Kuk says.according to their 17 individuals with metabolically healthy obesity are actually not at an elevated mortality 18 This means that hundreds of thousands of people in North America with metabolically healthy obe sity will be told to lose weight when it's 19 how much benefit they'll actually 20 she concludes
14选？

A.confused
B.combined
C.compared
D.concluded

The students have just completed their course.

A:improved
B:finished
C:ended
D:concluded